Products - Series 320 (Page 2 of 2)


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

Series 320 Torque Limiter Selection
Method	Example

Data required for Torque Limiter Selection.
•	Kilowatt and rpm of the driver.
•	Shaft details of the driving and driven equipment.

(1)	Calculate the maximum Torque (Nm): Torque = ( Kw x 9550 ) / rpm Select the Torque Limiter, which has a higher torque rating.

Consideration should be given to start torque or other special circumstances depending on the position chosen in the drive system. The accuracy of the Autogard Series 320 will ensure that disengagement will only take place when the pre-set torque is exceeded.

(2)	Check the Limiting Conditions:
(a)	Check the hub bore capacity is suitable
(b)	Check the Torque Limiter dimensions such as Overall Length and Outside Diameters.

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

All Autogard Series 320 units may be supplied from the factory at a pre-set torque and with required Drive Medium assembled to the unit.

Driver: Geared Motor
(5 Kw at 120 rpm)
Driven equipment: Packaging Machine

Start-up Torque = 2 x Running Torque
System must be direct driven

Motor shaft: 55 mm Compressor shaft: 50 mm

Torque (Nm) =
(5 Kw x 9550 ) / 120

Maximum Nominal Torque = 398 Nm

Maximum Start-up Torque =
398 x 2 = 796 Nm

Series 320 Selection based on Start-up rating: 320-4. Coupling style 5, 6, 7 or 8 is acceptable for direct drives

Select a 320-4 / 8 : (Type 8)

Coupling Bore Capacity:
75 mm maximum

Keyed Hub Bore Capacity:
58 mm

The 320-4 / 8 is acceptable in this application

Ordering the 320 Series Torque Limiter

When ordering please provide the following designation:

Model – Size / Type / Feature / S_ Bore / S_ Bore

Feature:
SR – Synchronous Reset (Standard)
RR – Rapid Reset (Optional)

Example: 320 – 2 / 8 / SR / S1-45 / S2-40
Refers to a Series 320 size 2 Torque Limiter designed for Synchronous Reset.

Bore S2 = 40 mm and Bore S3 = 45 mm

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

The Autogard Series 350 and Series 360 are currently under construction.