Not currently in use. Prior to May 1987, friction plates containing asbestos were used.
From June 1987 to September 1990, both asbestos-containing and non-asbestos products were sold.
Since 1990, we have been using non-asbestos products as standard.

This friction material is made from a base of inorganic and organic fibers and resin, to which friction stabilizers and reinforcing materials are added, and then molded.

Please use a retaining ring or end plate.

If the sprocket teeth are induction hardened, the TL200 to TL700 sizes can reach 1800 r/min.
Larger sizes can be used up to approximately 800 r/min.

Cannot be used with standard products. If water or oil gets on the friction plate, the friction coefficient will change, which will change the slip torque.
It may also cause rust. There are cases where it can be used with countermeasures, so please consult us each time.

It can handle up to 15,000 N･m. If you require a higher slip torque, please contact us.

From 1987 to 1990, we sold both asbestos-containing and non-asbestos products.
NA indicates that the friction plate is made of non-asbestos material, making it easier to distinguish it from the old asbestos products.
Since 1990, all of our shipments have been asbestos-free, and from that same period we have stopped using NA in our model numbers.

The number at the end indicates the number of disc springs. The TL250-2 is made by stacking two of the same disc springs as the TL250-1 in the same direction.
The set torque is doubled for the same tightening amount. All other parts are the same.

It serves to absorb the radial load applied to the hub when Torque Limiter slips.

The length (thickness) of the bushing should be shorter than the thickness of the center member (sprocket, etc.) to be used.
Please choose the longest length. For example, for RS50, it will be B6.5 (6.5mm).

The inner diameter must be machined to match the outer diameter of the bush. Also, the friction surfaces (both sides) must be finished to 3S to 6S.
See catalog for dimensions and tolerances.

We have shaft bore tolerance H7 and new JIS keyway or pre-machined products in stock, so please feel free to use them.
We also accept special shaft hole processing requests, so please feel free to contact us.

The point where there is no play when the adjustment nut or bolt is tightened by hand is taken as 0 point.

After determining the zero point, tighten the adjustment nut (bolt) loosely and gradually tighten it more firmly while checking on the actual machine.
Find the most suitable tightening position.

If you specify the torque setting, we will set it and ship it to you. However, the shaft hole must be machined and a center member must be included.

Please indicate the set torque value in N･m at the end of the model number.

Example: TL250-1-04022-TH18JD1-N9.8 (torque set to 9.8 N m)

Unless otherwise specified, the adjustment nuts (bolts) for all sizes are tightened at 120°.

The minimum number of teeth that can be used with the TL350 is 21T for the RS50. If the outer diameter is 20T, the roller chain will interfere with the hub because it is too small.
Please refer to the catalogue for a list of the minimum number of teeth for each size.

When Torque Limiter slips, the decrease in rotation speed can be detected using a proximity switch and digital tachometer.
Please refer to the example in the catalogue.

There is no particular orientation for the drive side or driven side. Please note that the maximum shaft hole diameter on the coupling side is larger.

The bushing length is not specified, so it is not included.
If bushing length is required, please specify the bushing size, such as TL200-1-B6.0.

Yes, you can order. Please order the friction plate as TL250A and the disc spring as TL250S.

This is something that is used by clamping it to Torque Limiter.
Sprockets are usually used most often. Torque Limiter with sprockets are available.

Most of our products have been switched to RoHS compliant, but there are some model numbers that have not been switched due to inventory issues.
If you require a RoHS compliant product, please specify this when placing your order.