China Self Locking Gearbox

Self Locking Gearbox
Description

Self-locking Worm Gear

A self-locking worm gear is a type of worm gear that does not allow the interchangeability of the input and output gears. As you know, in spur gear trains you can interchange the driving gear and the driven gear but the same is not possible for the self-locking type of worm gears. For this type of gear, the worm always acts as a driving gear and the spur gear as a driven gear- vice versa is not possible. If you try to run it otherwise, it will lock automatically.

As a matter of fact, most of the worm gear trains used in industry are of the self-locking type. But you can of course design a non-self- locking type of worm gear. Approximately, if the tangent of the helix angle of the worm gear is less than the coefficient of friction between the worm and the gear, then the worm gear train should be a self-locking type. A more precise governing equation to ensure the self-locking feature of the worm gear train is:

f < cos θn * tanΛ............Eqn.1

Where,

f - Coefficient of friction between the worm and the gear.

θn- is the pressure angle of the gear train

Λ- Helix angle of the worm.

Advantages of Self-Locking Worm Gears

You can achieve a large reduction ratio (as large as 200:1) from a self-locking worm gear without increasing the size of the gear box. How? A 360 degree rotation of a single start worm causes the meshing spur gear to rotate by one tooth. So, if a 10 teeth spur gear is meshed with a single start worm then you will get a reduction ratio of 10:1 straight away. Whereas, for achieving the same reduction ratio by using a spur gear train, you have to use another 100 teeth spur gear with that 10 teeth spur gear. So imagine the comparative size reduction.

Related ProductsOur CompanyEver-power Group specialist in making all kinds of mechanical transmission and hydraulic transmission like: planetary gearboxes, worm reducers, in-line helical gear speed reducers, parallel shaft helical gear reducers, helical bevel reducers, helical worm gear reducers, agricultural gearboxes, tractor gearboxes, auto gearboxes, pto shafts, special reducer & related gear components and other related products, sprockets, hydraulic system, vacuum pumps, fluid coupling, gear racks, chains, timing pulleys, udl speed variators, v pulleys, hydraulic cylinder, gear pumps, screw air compressors, shaft collars low backlash worm reducers and so on. furthermore, we can produce customized variators, geared motors, electric motors and other hydraulic products according to customers' drawings.
We provides a reliable grantee for the product' s quality by advanced inspection and testing equipment. professional technical team, exquisite processing technology and strict control system.
In recent years, the company has been developing rapidly by its rich experience in production, advanced management system, standardized management system, strong technical force. We always adhere the concept of survival by quality, and development by innovation in science and technology.
Our Group is willing to work with you hand in hand and create brilliance together! Material available
Low carbon steel, C45, 20CrMnTi, 42CrMo, 40Cr, stainless steel. Can be adapted regarding customer requirements.Surface treatment
Blacking, galvanization, chroming, electrophoresis, color painting, ...
Heat treatment
High frequency quenching heat treatment, hardened teeth, carbonizing, nitride, ...
CertificationsFAQ:
Q: Are you trading company or manufacturer ?
A: Our group consists in 3 factories and 2 abroad sales corporations.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: How long is your delivery time ? What is your terms of payment ?
A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shippment.
Q: What is the exact MOQ or price for your product ?
A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation.
If you have another question, please feel free to contact us.Packing & Delivery
Services
Also I would like to take this opportunity to give a brief introduction of our Ever-Power company:
Our company is a famous manufacturer of agriculture gearbox,worm reduce gearbox, PTO shafts, Sprockets ,rollar chains, bevel gear, pulleys and racks in china.
We have exported many products to our customers all over the world, we have long-time experience and strong technology support.
Some of our customer :
Italy: COMER,GB GEABOX ,SATI, CHIARAVALLI, AMA , Brevini
Germany: SILOKING ,GKN ,KTS
France: Itfran, Sedies
Brazil: AEMCO ,STU
USA: John Deere , BLOUNT, Weasler, Agco, Omni Gear, WOODS
Canada: JAY-LOR , CANIMEX ,RingBall
......
-Ø Our Company with over twelve year's history and 1000 workers and 20 sales.
-Ø With over 100 Million USD sales in 2017
-Ø With advance machinery equipments
-Ø With large work capacity and high quality control, ISO certified.
......
You also can check our website to know for more details, if you need our products catalogue, please contact with us.