Warner Electric L Series User Manual

P-2072-WE
“L” Series 310

Torque Limiters

“L” Series 310

Fitting Adjustment Maintenance

11

Torque Limiters “L” Series 310

L

Z

Fitting Adjustment

Maintenance

Leaf nº 587

10

- Fig. 1 -

- Fig. 2 -

3

4

2

12

11

6

5

7

1

8

9

L

Z

10

7

1

KEY:

- Hub

1

- Inner Disc

2

- Thrust-plate

3

- Safety-ring

4

5

- Thrust-cheek

6

- Connecting Screw

2

12

8

9

- Compression-spring

7

- Adjusting washer

8

- Clamping and adjusting screw

9

- Wear compensation screw

10

- Spider

11

- Outer disc

12

2 Warner Electric Europe • [phone] P-2072-WE • 2/13

The “L” limiter is a multi-disc unit used to limit the torque absorbed when starting or protect parts of machines

against intermittent overloads. lt can be mounted vertically, horizontally or in any other position.

Two models are available:

- For running in oil or in contaminated atmosphere : units fitted with steel disc rubbing against sintered
disc, reference : L - B.

- For running in dry conditions : units fitted with steel disc rubbing against lined steel disc, reference L - Gr with
reinforced disc.

1 DESCRIPTION:

The limiter includes:

1.1 - The driving part, consisting of:

• A hub 1 keyed to the driving shaft.

• Inner disc 2, one or two thrust places 3, the latter being integral with hub 1 by their involute toothing.

• Depending on the size of the unit : either a safety ring 4 or a thrust-cheek 5 bound to the hub 1 by means

of screws 6.

• Compression springs 7.

• An adjusting washer 8.

• Adjusting and clamping screws 9.

• Wear compensation screws 10.

1.2 - The driven part includes:

• A spider 11 with either notches (Fig. 1) or inside toothing (Fig. 2)

• A outer disc 12 integral with spider 11.

Note: instead of having the hub driving and the spider driven, as described above, it is possible

to have the reserve, if the conditions of the application require so. (hub drive, spider
driving).

2 OPERATION

The torque limiter is used to transmit a rotating movement while limiting the effort to pre-established value.

When this calibrated torque is exceeded, slipping occurs and the driving and driven parts do not rotate at the
same speed any more.

The springs 7 press the inner discs 2 and outer disc 12 against one another, the compressing effort being

adjusted by the adjusting and clamping screws 9 and the wear compensation screws 10 to obtain the chosen
slipping torque.

Warner Electric Europe • [phone] P-2072-WE • 2/13 3