Ratchet torque limiter SA series, PTO drive shaft for agricultural machines, China manufacturer OEM / ODM


Ratchet torque limiter SA series, PTO drive shaft for agricultural machines, China manufacturer OEM / ODM - 272

Ratchet torque limiter SA series, PTO drive shaft for agricultural machines, China manufacturer OEM / ODM - 273

Main uses and guarantees:

Extensive use for agricultural machines

Guarantee: High precision, high wear resistance, low noise, smooth and steady, high strength

A ratchet torque limiter is a device able to interrupt the transmission of power in the event of a torque peak or overload that exceeds the setting. The torque limiter is automatically re-engaged after the cause of the overload is removed. Ratchet torque limiters are generally employed to protect implements subject to constant or alternating torques from overloads. The setting is normally two to three times the median torque to be transmitted.  During operation of the device, the spring loaded ratchets try to reengage the grooves
in the housing. This generates small torque peaks and noise. This noise warns the rator that the device is engaged. Once the device is slipping, the user should promptly stop the PTO to avoid excessive wear.
Ratchet torque limiters should be used only on drivelines operating at speeds less than 700 min-1. Ratchet torque limiters may be supplied in either symmetrical or one-way types.
One-way ratchet torque limiters permit higher settings compared to symmetrical units with an equal number of ratchets. When rotated opposite the normal working direction, oneway ratchet torque limiters transmit only 15% of the torque setting.
Standard one-way ratchet torque limiters are designed to operate on a driveline with counter-clockwise rotation. This is the typical rotation of a ratchet torque limiter installed on the implement side of a primary driveline connecting a tractors’ rearmounted PTO (clockwise rotation viewed into the shaft) to the implement PIC (counterclockwise rotation).


Symmetrical and one-way ratchet torque limiters are supplied in different versions, with different lubrication frequencies (either 50 hours or seasonal lubrication). Version SA (one-way) and version LN (symmetrical) have a 50 hour lubrication interval (NLGI 2 grease). SA1, SA2, LN1 and LN2 have a push-pin type connection to the splined shaft. SA3, SA4, LN3 and LN4 have a ball collar type connection.


Features available

Our product can be adapted. Please give us the required model name so we can provide you the most accurate quotation.

This chart if for reference, if you need different features, provide us all relevant details for your project and we will be glad to help you finding the product matching your need at the best quality with the lowest price.

Please note the price and the MOQ may vary regarding the product you chose: do not hesitate to contact us to know more!


Our service

We Can Provide You:

◆ On-time Delivery of a wide variety of products
◆ Exceptional product solutions and service
◆ Quality guarantee
◆ Local technical support
◆ Fast response to customers: Feedbacks in 24 hours

“Quality is priority” EVER-POWER people always attach great importance to quality controlling from the very beginning to the end. Our factory has gained CE, VB, SGS & ISO certificates.

Ever-Power Transmission Group is a group corporation manufacturering all kinds of transmission components. We have 3 factories and 2 abroad sales corporations.


About us

Our company manufactures sophisticated boring and milling power head, numerical control (hard rail and wire rail) sliding table and numerical control machine. We provide modular combination design and manufacturing scheme to effectively improve production capacity in accordance with product characteristics required for any industry.

The products provided by Jingyao Numerical Control Company are manufactured at the vertical and horizontal machining center and are scanned using three-dimensional detectors. The hardness text shall be made for main parts after thermal treatment. The products have very high machining precision, easy transmission, specious surface and reasonable design. The manufactured product is widely used in the auto parts, engine parts, agricultural machinery, engineering machinery, textile machinery, water heating fittings, pipe fittings, chemical equipment parts, military project and mould manufacturing industry.

Since products are on the market, they have been highly recommended by both domestic and foreign customers.

The company mainly sells control parts, driving parts, cutting tools (measuring implement) and other precision parts of domestic and overseas brands. On the basis of the resource superiority of taking full advantage of the “Chinese cutting Tool and Measuring implement Market ” “Chinese Mechanical and Electrical Hardware city”, “Taizhou Automation Equipment Market”, and by combination with the internal technology experience, the company will provide on-line and off-line (O2O) one-stop purchasing platform and establish distribution departments in major cities.

Company tenet: creation of value for customer, creation of opportunities for employees, and creation of benefits for the enterprise. We firmly believe that we are able to open up a new situation where we can get win-win results and mutual benefits with new and old customers through unremitting efforts.



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





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