Products - Series 400 (Page 2 of 2)


Multiple coil springs provide improved adjustment		Multiple coil springs provide improved serviceability

Features and Benefits

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Proven design with thousands of units successfully in operation.

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Accurate torque limitation prevents costly down time.

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Standard designs can accommodate large torque ranges.

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Instantaneous disengagement protects equipment from damaging inertias.

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Bi-direction protection.

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Series 400 is designed to operate at High or Low speeds.

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Automatic or manual re-engagement by reversing the unit.

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Series 400 is offered in a large number of styles ensuring
the right solution is available for all applications. e.g.

- Timing, HTD & V-Belt drives

- Chain and sprocket drives

- Gear drives

- Flexible or rigid couplings

- Flywheel or large gear mounts etc.

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Springs can be inspected and changed without removing the clutch from the drive train.

Selection
Data required for torque limiter selection.
•	Kilowatt or Horsepower and rpm of the driver.
•	Shaft details of the driving and driven equipment.

(1) Calculate the nominal torque:

Torque (Nm) = Kilowatt (Kw) x 9550 / rpm or

Torque (lbf-ins) = Horsepower (HP) x 63025 / rpm

Consideration should then be given to start torque or other special circumstances depending on the position chosen in the drive system. Choose a set torque with a suitable margin over nominal. Select the torque limiter which has a higher torque rating.

(2)	Check limiting conditions:
(a)	Check hub bore capacity
(b)	Check the torque limiter dimensions such as the overall length and outside diameter.

(3)	Select and specify the appropriate drive medium or coupling.

All Autogard Series 400 units may be supplied from the factory at a pre-set torque and with the required drive medium assembled to the unit.

Ordering the 400 Series Torque Limiter

When ordering please provide the following designation:
Model & Type / Size / Feature / S1 Bore / S2 Bore

Feature:
RR – Rapid Reset (standard)
SR – Synchronous Reset (optional)

S1 Bore & S2 Bore – Please specify metric or imperial.
Standard bore tolerance = H8 + normal Fit key

Example:
402 / 3 / SR / S1 40 mm
Refers to a type 402 size 3 torque limiter designed for synchronous reset.

Bore S1 = 40 mm.

Also specify
• Torque setting or torque range required
• Pulley or sprocket details where required

The specifications contained within this page are correct at the time of going to print. British Autogard are continually reviewing and updating the specifications on all its product range and therefore reserve the right to change any detail