China Hot selling high quality and precision JTW-2.5T 2.5 ton hand operated lead screw jack for table lift with crank mechanism with Free Design Custom

FeaturesScrew jacks are transmission products (machine screws or ball screws) that make rotary motion using gearbox assemblies (worm gears or bevel gears) and motors. They can be used to push, pull, tension, unlock, tilt, rotate, pull, raise or lower loads ranging from a few kilos to several thousand tons. The key components of screw jacks are trapezoidal lifting screw, worm screw, worm gear and gear housing. Worm screw is rotated manually (manual screw jack) or by a motor (electric screw jack). The screw jack working principle: Worm screw rotate the worm gear; the rotating worm gear move the lifting screw up and down in linear motion way. If input a small rotation force on worm screw, it can amplify force from lifting screw shaft. This mechanical advantage property is good for raising and lowering maintenance platforms, opening and closing air dampers, oven doors, sluice gates, adjusting tooling machine beds.Screw jacks are a combination of a screw with a gearbox. There are 3 types of configurations that can be adapted to different requirements:Translating screw design: The screw moves when the gearbox input shaft (worm shaft end) is activated. It includes a rounded screw protection tube on the back.Anti-rotating keyed screw design: The screw engages, as in configuration translating screw design but with the difference that the screw with milled keyway, or the back protective tube is square section.Rotating screw design: The screw does not move with the driving of the worm shaft, it only turns; it is the corresponding travel nut that moves along the screw.Compact Cubic Screw Jacks JTC2.5 (2.5 kN) to JTC500 (500 kN)* Self locking lifting screw, precise positioning, and uniform speed. * Available in 11 sizes from JTC2.5 to JTC500.* Static load capacity from 2.5 kN to 500 kN.* Lifting screw diameter from 14 mm to 120 mm.* Standard lifting screw maximum length 6000 mm, custom longer stroke.* Upright or Inverted mounting. Available in tension or compression loads.* Translating, Keyed for non-rotating, and Rotating designs.* Each Model has TWO gear ratios, they are High ratio, Slow ratio. * Standard with 1-start lifting screw, custom 2-starts lifting screw which offers increased travel speed and require a brake or external locking device to hold position.* Custom-made lifting screw diameter and pitch, gear ratios, and worm shaft sizes.* Lifting Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.* Can be operated by manually operated or by electrical motor driven.* Can be applied either individually use or combined into a exactly synchronized lifting system, linked by connecting shafts, bevel gearboxes, motor adapters, limit switches, geared motor and couplings etc.* Custom-made double clevis screw jack, anti-backlash screw jack.* Can be used as alternatives to hydraulic and pneumatic systems.Materials:* Housing(Gearbox): Aluminium Alloy (JTC2.5, JTC5, JTC10, JTC25). Ductile Iron (JTC25, JTC50, JTC100, JTC150, JTC200, JTC250, JTC350, JTC500).* Lifting Screw: Carbon steel #45. Custom stainless steel.* Worm(Input Shaft): Hardened worm, carbon steel #45. Custom stainless steel.* Worm Gear(Wheel): High strength bronze.* Travelling Nut and Safety Nut: High strength bronze. Machine Screw Jacks JTW-1T (1 Ton) to JTW-100T (100 Ton)* Self locking MACHINE screw, precise positioning, and uniform speed. * Available in 10 sizes from JTW-1T to JTW-100T.* Static load capacity from 1 Ton to 100 Ton.* Machine screw diameter from 24 mm to 160 mm.* Standard machine screw maximum length 6000 mm, custom longer stroke.* Upright or Inverted mounting. Available in tension or compression loads.* Translating, Keyed for non-rotating, and Rotating designs.* Models JTW-1T to JTW-10T/15T have THREE gear ratios (High ratio, Medium ratio, Slow ratio). Models JTW-20T to JTW-100T have TWO gear ratios (High ratio, Slow ratio). * Standard with 1-start machine screw, custom 2-starts machine screw which offers increased travel speed and require a brake or external locking device to hold position.* Custom-made machine screw diameter and pitch, gear ratios, and worm shaft sizes.* Machine Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.* Can be operated by manually operated or by electrical motor driven.* Single unit use, or complete jacking system including gear motors, bevel gearboxes, connecting shafts and couplings for dual or multiple jack arrangements.* Custom-made double clevis screw jack, anti-backlash screw jack.* Can be used as alternatives to hydraulic and pneumatic systems.Materials:* Machine Screw: Carbon steel #45. Custom stainless steel.* Worm(Input Shaft): Hardened worm, carbon steel #45. Custom stainless steel.* Worm Gear(Wheel): High strength bronze.* Travelling Nut and Safety Nut: High strength bronze.* Housing(Gearbox): Ductile Iron or Stainless steel, available in both of them. Trapezoidal Screw Jacks JT-0.5T (0.5 Ton) to JT-100T (100 Ton)* Self locking Trapezoidal screw, precise positioning, and uniform speed. * Available in 12 sizes from JT-0.5T to JT-100T.* Static load capacity from 0.5 Ton to 100 Ton.* Trapezoidal screw diameter from 20 mm to 100 mm.* Standard Trapezoidal screw maximum length 6000 mm, custom longer stroke.* Upright or Inverted mounting. Available in tension or compression loads.* Translating, Go Kart Forward Reverse Gearbox Fits Manufacturer custom gearbox transmission Keyed for non-rotating, and Rotating designs.* Each Model has THREE gear ratios, they are High ratio, Medium ratio, Slow ratio.* Standard with 1-start Trapezoidal screw, custom 2-starts Trapezoidal screw which offers increased travel speed and require a brake or external locking device to hold position.* Custom-made Trapezoidal screw diameter and pitch, gear ratios, and worm shaft sizes.* Trapezoidal Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.* Can be operated by manually operated or by electrical motor driven.* Single unit use, or complete jacking system including gear motors, bevel gearboxes, connecting shafts and couplings for dual or multiple jack arrangements.* Custom-made double clevis screw jack, anti-backlash screw jack.* Can be used as alternatives to hydraulic and pneumatic systems.Materials:* Trapezoidal Screw: Carbon steel #45. Custom stainless steel.* Worm(Input Shaft): Hardened worm, carbon steel #45. Custom stainless steel.* Worm Gear(Wheel): High strength bronze.* Travelling Nut and Safety Nut: High strength bronze.* Housing(Gearbox): Ductile Iron Ball Screw Jacks JTB-1T (1 Ton) to JTB-35T (35 Ton)* High accuracy ball screw, high efficiency, high performance, high duty cycle, low backlash, long service life, and uniform lifting speed* Available in 7 sizes from JTB-1T to JTB-35T.* Maximum static load capacity from 1 Ton to 35 Ton.* Ball screw diameter from 20 mm to 100 mm.* Standard ball screw maximum length 6000 mm, custom longer stroke.* Upright or Inverted mounting. Available in tension or compression loads.* Translating, Ant-rotation, and Rotating designs.* Models JTB-1T to JTB-10T have THREE gear ratios (High ratio, Medium ratio, Slow ratio). Models JTB-20T to JTB-35T have TWO gear ratios (High ratio, Slow ratio). * Standard with 1-start ball screw, custom 2-starts ball screw which offers increased travel speed. Both of them require a brake or external locking device to hold position.* Custom-made machine screw diameter and pitch, gear ratios, and worm shaft sizes.* Ball Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.* Can be operated by manually operated or by electrical motor driven.* Single unit use, or complete jacking system including gear motors, bevel gearboxes, connecting shafts and couplings for dual or multiple jack arrangements.* Custom-made double clevis screw jack, anti-backlash screw jack.* Can be used as alternatives to hydraulic and pneumatic systems.Materials:* Ball Screw: SCM 450, S55C, Hardness: HRC 58-62 * Ball Nut: SCM415H, Hardness: HRC 58-62 * Steel Ball: SUJ2, Hardness: HRC 60 UP* Worm(Input Shaft): Hardened worm, carbon steel #45. Custom stainless steel.* Worm Gear(Wheel): High strength bronze.* Travelling Nut: High strength bronze.* Housing(Gearbox): Ductile Iron or Stainless steel, available in both of them. Stainless Steel Screw Jacks JSS-1T (1 Ton) to JSS-20T (20 Ton)* Self locking stainless steel screw, precise positioning, and uniform speed. * Available in 5 sizes from JSS-1T to JSS-20T.* Static load capacity from 1 Ton to 20 Ton.* Stainless screw diameter from 24 mm to 65 mm.* Standard stainless screw maximum length 6000 mm, custom longer stroke.* Upright or Inverted mounting. Available in tension or compression loads.* Translating, Keyed for non-rotating, and Rotating designs.* Models JSS-1T to JSS-20T have THREE gear ratios (High ratio, Medium ratio, Slow ratio). * Standard with 1-start stainless screw, custom 2-starts stainless screw which offers increased travel speed and require a brake or external locking device to hold position.* Custom-made stainless screw diameter and pitch, gear ratios, and worm shaft sizes.* Stainless Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.* Can be operated by manually operated or by electrical motor driven.* Single unit use, or complete jacking system including gear motors, bevel gearboxes, connecting shafts and couplings for dual or multiple jack arrangements.* Custom-made double clevis stainless steel screw jack, anti-backlash stainless steel screw jack.* Can be used as alternatives to hydraulic and pneumatic systems. Materials:* Lifting Screw: Stainless steel #304. Custom stainless steel #316.* Worm(Input Shaft): Hardened worm, stainless steel #304. Custom stainless steel #316.* Worm Gear(Wheel): High strength bronze.* Travelling Nut and Safety Nut: High strength bronze.* Housing(Gearbox): Stainless steel #304.* All Covers of Housing(Gearbox): Stainless steel #304. Custom stainless steel #316.* Bearings: Bearing steel as standard. Custom stainless steel #304. * Lifting Screw Ends: Stainless steel #304. Custom stainless steel #316.* Motor Flanges: Stainless steel #304. Custom stainless steel #316.* Protective tube: Stainless steel #304. Custom stainless steel #316.* Locking screws and Keys: Stainless steel #304. Custom stainless steel #316. High Speed Bevel Gear Screw Jacks JTG19 to JTG40* Higher efficiency, higher lifting speed, higher duty cycle, longer lifespan* Available in 4 sizes from JTG19 to JTG40 (trapezoidal screw), and 4 sizes from JTGB19 to JTGB40 (ball screw). * Static load capacity from 3000 kgf to 15000 kgf. Dynamic load capacity from 1000 kgf to 2600 kgf. * Trapezoidal screw diameter from 32 mm to 63 mm. Ball screw diameter from 32 mm to 63 mm. * There are no “standard” travel lengths. Standard trapezoidal/ball screw maximum length 6000 mm, custom longer stroke.* Upright or Inverted mounting. Available in tension or compression loads.* Translating, Keyed for non-rotating, and Rotating designs.* Each size is available with 1 ratio, Oil Bearing Motor Copper Iron Base Alloy Powder Metallurgy Bush Washing Machine Motor Parts 2.5:1 – 3:1. * Standard with 1-start trapezoidal/ball screw, custom 2-starts trapezoidal screw/ball which offers increased travel speed and require a brake or external locking device to hold position.* Custom-made trapezoidal/ball screw diameter and pitch, gear ratios, and worm shaft sizes.* Trapezoidal/Ball Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.* Can be operated by manually operated or by electrical motor driven.* Single unit use, or complete jacking system including gear motors, bevel gearboxes, connecting shafts and couplings for dual or multiple jack arrangements.* Optimal for low-speed operation: The driving system has less noise because machinery can be driven at a lower input speed.* Simple and effective solution in comparison with hydraulic and pneumatic systems. Materials:* Spiral Bevel Gears: Lapped together in pairs, high quality alloy steel, case hardened.* Trapezoidal Screw: Carbon steel #45. Custom stainless steel.* Ball Screw: SCM 450, S55C, Hardness: HRC 58-62 * Ball Nut: SCM415H, Hardness: HRC 58-62* Steel Ball: SUJ2, Hardness: HRC 60 UP* Input Shaft: Hardened, alloy steel. Custom stainless steel.* Drive Sleeve: High strength bronze.* Travelling Nut and Safety Nut: High strength bronze.* Housing(Gearbox): Ductile Iron. Hand Wheel Manual Screw Jack 1 Ton to 20 TonHand wheels in a variety of diameters. They are recommended for self-locking jacks and actuators and can be mounted directly to the jack input shaft. Since hand wheels are are mounted directly CZPT jacks and actuators and specified as part of the complete jack part number. Their specific selection is dependent on input torque requirements.A hand wheel is a convenient solution for manually operating a jack when using machine screw jacks in intermittent positioning applications. Hand wheels are available in a range of diameters from 5 to 16 inches and can be adapted for use on jacks up to the 20 tons capacity model.NOTE: Hand wheels do not include a brake and therefore are not for use with ball screw jacks. When using hand wheels with a jack that can back drive (12:1 and lower) an additional locking mechanism may be required to prevent “creep”. Electric Motorized Screw Jack 1 Ton to 100 TonScrew jacks can be connected directly to an electric motor creating a compact linear drive. Standard 3 phase motors are most common. For lower powers DC motors can be used, or servo motors can achieve high performance.Electric Screw Jack can also be called motorized screw jack, it includes a worm gear screw jack and an electric motor.The screw jack can be self-locking CZPT screw jack or high precision ball screw jack.The motor can be high precision servo motor,stepper motor,helical gear motor, worm gear motor, 3-phase asynchronous motor and 12v,24v,48v do motor and dc gear motor etc.Electric Screw jack lift Function: The Electric screw jack actuator is a basis jack-up part, accomplish the functions such as lifting, drop, push and inverting through worm gear drives screw, because it is driven by electric motor, it has higher efficiency than manual screw jack. Screw Jack Lifting System 0.1 Ton to 1000 TonWorm Gear Screw Jack systems are ruggedly designed and produced in standard models with load handling capacities from 1 ton to 100 tons. They may be used individually or in multiple arrangements. There are no “standard” travel lengths and all Worm Gear Screw Jack systems are built to specification. The jack housings are made of ductile iron and proportioned to support the rated capacity of the unit. Screw Jack System is usually used for lifting heavy duty load or lifting platform. Screw Jack System mainly includes screw jack, bevel gearbox, electric motor, connecting rod coupling, gear reducer. Clients can choose 2 screw jacks system, 3 screw jacks system, 4 screw jacks system, 6 screw jacks system, 8 screw jacks system for your practical application. We can offer a complete screw jack system including electric motor, gear reducer and so on. Before clients place orders, our engineers provide 2D CAD or 3D drawings for final confirmation. Note: When the screw jacks travel stroke is too long, we advise the clients to use a CZPT post.Screw Jack System EfficiencyTwo screw jacks lift system, I and T configuration,, transmission efficiency 95% Three screw jacks lift system, I and T configuration, transmission efficiency 90%Four screw jacks lift system, H, U and T configuration, transmission efficiency 85%Six screw jacks lift system, 2H and U configuration, transmission efficiency 80%Eight screw jacks lift system, 2H and H configuration, transmission efficiency 80%Notes: don’t ignore bevel gearbox efficiency 98%. Packaging & ShippingShipping:1. CZPT freight: seaport to seaport, price terms CIF, FOB, EXW, CFR etc.2. Air freight: airport to airport, price terms EXW, CRF etc.3. Air courier: DHL, FEDEX, UPS, TNT door to door shipment, price terms DDU, CPT etc.Packing: 100% standard exporting plywood cases.
Note: International Exporting Standard Wooden Material with Free Fumigation.

Our Advantages* One of the biggest orders with 1750 units screw jacks.* Standard products with 2D Drawings(DXF, DWG, PDF) and 3D CAD Model(STEP).* 100% quality assured with double quality inspections. Original Inspection Reports, Operation Manual, and Book Catalogue are put into the packages. * 100% safety transportation with strong standard export plywood cases materials (free fumigation). * International standard materials for all standard products. * Custom design available, OEM service available, CZPT Gearbox SLW8503 FOR CZPT DRILLING RIG WINCH DRIVE Free engineering advice and Customer label available.

Finished Projects1. Theatrical solutions stage and orchestra platform lifts projects. Customers are from France, Australia, Netherlands, United Kingdom, Spain and Canada. 2. Hydroelectric power station projects and water conservancy projects. Customers are from Vietnam, Australia, Malaysia, Belgium, United States and United Kingdom. 3. Aircraft maintenance platforms and docking systems projects. Customers are from Singapore. 4. Solar panel tracking system projects. Customers are from Spain, India and Canada. 5. Bolted steel storage tanks and silos lifting solutions. Customers are from South Africa, United States, Mexico and Vietnam. 6. Dish antenna elevation and azimuth positioning projects. Customers are from Singapore, Malaysia and United States. 7. Railway wagon projects. Customers are from South Africa. 8. Beverage can production lines. Customers are from Netherlands, United States, Thailand and Indonesia. 9. Steel factories production lines. Customers are from United States. 10. Continuous PU sandwich panel production lines. Customers are from Thailand and United Kingdom.
Other Products* Manual Screw Jacks.* Electric Screw Jacks.* Worm Gear Screw Jacks Series.* Bevel Gear Screw Jack Series.* Electric Cylinders Series.* Spiral Bevel Gearboxes Series.* Lifting Systems and Accessories.* Electric Linear Actuators Series.* Geared Motor and Gear Reducers Series.

Clients Countries1. American Countries: United States, Mexico, Canada, Chile.2. European Countries: Germany, France, United Kingdom, Italy, Spain, Poland, Romania, Netherlands, Belgium, Greece, Czech Republic, Portugal, Sweden, Hungary, Austria, Switzerland, Bulgaria, Denmark, Finland, Slovakia, Norway, Ireland, Georgia, Slovenia.3. Asian Countries: Malaysia, Indonesia, Singapore, Philippines, Vietnam, Thailand, India, Israel.4. Oceanian Countries: Australia, New Zealand.5. African Countries: South Africa, Egypt.
Contact InformationJACTON INDUSTRY Co., Ltd (VAT No.: 9144190007026567X3) is 1 of the leading companies in the field of Screw Jacks(Mechanical Actuators), Bevel Gearboxes, Lifting Systems, Linear Actuators, Gearmotors and Speed Reducers. We are an audited professional manufacturer and supplier by SGS (Serial NO.: QIP-ASI192186) and BV (Serial NO.: MIC-ASR257162) organizations. We have a strict quality system, with senior engineers, experienced skilled workers and practiced sales teams, and consistently provide the customers with the best engineered solution for precision linear actuation, power transmission and mechanical jacking systems. CZPT Industry guarantees quality, reliability, performance and value for today′s demanding industrial applications.

FAQ
1. What type of payment methods do you accept?
We accept Wire transfer, Credit Card, Paypal, Alibaba Trade Assurance order, Western Union and L/C etc.
2. Can I get 1 sample to test?
Yes, sample can be at a normal price and welcomed. The transport fees are at your account.
3. How about the quality of your product?
Jacton industry is only focus on the field of Screw Jacks(Mechanical Actuators), Bevel Gearboxes, Lifting Systems, Linear Actuators, Gearmotors and Speed Reducers. 4. OEM/ODM Accepted?
Yes, Please send you new product drawings or sample to us if you have, and we can custom-made as your required. We will also provide professional advices of the products to make the design to be maximize the performance.
5. If you can not find the product on our website,how do you do?
Please send us inquiry with product pictures and drawings by email or other ways you prefer, we’ll check if we could produce.
6. Can I trust you?
Absolutely yes. Samples could be provided to test firstly, and we can use Alibaba trade assurance service to do business to guarantee both the seller and buyer’ hot sale good quality 540 pto gearbox hydraulic gear pump with shocking price s benefit, and we are golden supplier for years.
7. What’s our products warranty?One year quality guarantee for the products from your purchase date, except the human damage

Worm Shafts and Gearboxes

If you have a gearbox, you may be wondering what the best Worm Shaft is for your application. There are several things to consider, including the Concave shape, Number of threads, and Lubrication. This article will explain each factor and help you choose the right Worm Shaft for your gearbox. There are many options available on the market, so don’t hesitate to shop around. If you are new to the world of gearboxes, read on to learn more about this popular type of gearbox.
worm shaft

Concave shape

The geometry of a worm gear varies considerably depending on its manufacturer and its intended use. Early worms had a basic profile that resembled a screw thread and could be chased on a lathe. Later, tools with a straight sided g-angle were developed to produce threads that were parallel to the worm’s axis. Grinding was also developed to improve the finish of worm threads and minimize distortions that occur with hardening.
To select a worm with the proper geometry, the diameter of the worm gear must be in the same unit as the worm’s shaft. Once the basic profile of the worm gear is determined, the worm gear teeth can be specified. The calculation also involves an angle for the worm shaft to prevent it from overheating. The angle of the worm shaft should be as close to the vertical axis as possible.
Double-enveloping worm gears, on the other hand, do not have a throat around the worm. They are helical gears with a straight worm shaft. Since the teeth of the worm are in contact with each other, they produce significant friction. Unlike double-enveloping worm gears, non-throated worm gears are more compact and can handle smaller loads. They are also easy to manufacture.
The worm gears of different manufacturers offer many advantages. For instance, worm gears are one of the most efficient ways to increase torque, while lower-quality materials like bronze are difficult to lubricate. Worm gears also have a low failure rate because they allow for considerable leeway in the design process. Despite the differences between the two standards, the overall performance of a worm gear system is the same.
The cone-shaped worm is another type. This is a technological scheme that combines a straight worm shaft with a concave arc. The concave arc is also a useful utility model. Worms with this shape have more than three contacts at the same time, which means they can reduce a large diameter without excessive wear. It is also a relatively low-cost model.
worm shaft

Thread pattern

A good worm gear requires a perfect thread pattern. There are a few key parameters that determine how good a thread pattern is. Firstly, the threading pattern must be ACME-threaded. If this is not possible, the thread must be made with straight sides. Then, the linear pitch of the “worm” must be the same as the circular pitch of the corresponding worm wheel. In simple terms, this means the pitch of the “worm” is the same as the circular pitch of the worm wheel. A quick-change gearbox is usually used with this type of worm gear. Alternatively, lead-screw change gears are used instead of a quick-change gear box. The pitch of a worm gear equals the helix angle of a screw.
A worm gear’s axial pitch must match the circular pitch of a gear with a higher axial pitch. The circular pitch is the distance between the points of teeth on the worm, while the axial pitch is the distance between the worm’s teeth. Another factor is the worm’s lead angle. The angle between the pitch cylinder and worm shaft is called its lead angle, and the higher the lead angle, the greater the efficiency of a gear.
Worm gear tooth geometry varies depending on the manufacturer and intended use. In early worms, threading resembled the thread on a screw, and was easily chased using a lathe. Later, grinding improved worm thread finishes and minimized distortions from hardening. As a result, today, most worm gears have a thread pattern corresponding to their size. When selecting a worm gear, make sure to check for the number of threads before purchasing it.
A worm gear’s threading is crucial in its operation. Worm teeth are typically cylindrical, and are arranged in a pattern similar to screw or nut threads. Worm teeth are often formed on an axis of perpendicular compared to their parallel counterparts. Because of this, they have greater torque than their spur gear counterparts. Moreover, the gearing has a low output speed and high torque.

Number of threads

Different types of worm gears use different numbers of threads on their planetary gears. A single threaded worm gear should not be used with a double-threaded worm. A single-threaded worm gear should be used with a single-threaded worm. Single-threaded worms are more effective for speed reduction than double-threaded ones.
The number of threads on a worm’s shaft is a ratio that compares the pitch diameter and number of teeth. In general, worms have 1,2,4 threads, but some have three, five, or six. Counting thread starts can help you determine the number of threads on a worm. A single-threaded worm has fewer threads than a multiple-threaded worm, but a multi-threaded worm will have more threads than a mono-threaded planetary gear.
To measure the number of threads on a worm shaft, a small fixture with two ground faces is used. The worm must be removed from its housing so that the finished thread area can be inspected. After identifying the number of threads, simple measurements of the worm’s outside diameter and thread depth are taken. Once the worm has been accounted for, a cast of the tooth space is made using epoxy material. The casting is moulded between the two tooth flanks. The V-block fixture rests against the outside diameter of the worm.
The circular pitch of a worm and its axial pitch must match the circular pitch of a larger gear. The axial pitch of a worm is the distance between the points of the teeth on a worm’s pitch diameter. The lead of a thread is the distance a thread travels in one revolution. The lead angle is the tangent to the helix of a thread on a cylinder.
The worm gear’s speed transmission ratio is based on the number of threads. A worm gear with a high ratio can be easily reduced in one step by using a set of worm gears. However, a multi-thread worm will have more than two threads. The worm gear is also more efficient than single-threaded gears. And a worm gear with a high ratio will allow the motor to be used in a variety of applications.
worm shaft

Lubrication

The lubrication of a worm gear is particularly challenging, due to its friction and high sliding contact force. Fortunately, there are several options for lubricants, such as compounded oils. Compounded oils are mineral-based lubricants formulated with 10 percent or more fatty acid, rust and oxidation inhibitors, and other additives. This combination results in improved lubricity, reduced friction, and lower sliding wear.
When choosing a lubricant for a worm shaft, make sure the product’s viscosity is right for the type of gearing used. A low viscosity will make the gearbox difficult to actuate and rotate. Worm gears also undergo a greater sliding motion than rolling motion, so grease must be able to migrate evenly throughout the gearbox. Repeated sliding motions will push the grease away from the contact zone.
Another consideration is the backlash of the gears. Worm gears have high gear ratios, sometimes 300:1. This is important for power applications, but is at the same time inefficient. Worm gears can generate heat during the sliding motion, so a high-quality lubricant is essential. This type of lubricant will reduce heat and ensure optimal performance. The following tips will help you choose the right lubricant for your worm gear.
In low-speed applications, a grease lubricant may be sufficient. In higher-speed applications, it’s best to apply a synthetic lubricant to prevent premature failure and tooth wear. In both cases, lubricant choice depends on the tangential and rotational speed. It is important to follow manufacturer’s guidelines regarding the choice of lubricant. But remember that lubricant choice is not an easy task.

China Hot selling high quality and precision JTW-2.5T 2.5 ton hand operated lead screw jack for table lift with crank mechanism  with Free Design CustomChina Hot selling high quality and precision JTW-2.5T 2.5 ton hand operated lead screw jack for table lift with crank mechanism  with Free Design Custom