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tenditori automatici per catene e cinghie

TORQUE LIMITERS WITH CHAIN COUPLING AND SLIDING INDICATOR "LFGSL"

TORQUE LIMITERS WITH CHAIN COUPLING AND SLIDING INDICATOR "LFGSL"
Price:
from €151.40
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Description

Zetasassi started producing torque limiters in 1982. They are high quality, reliable safety devices.They are used to protect the controlling parts from overloads that could damage the various organs of transmission. Their use is actually essential where there is a need to ensure effective overload protection.

Under normal working conditions, they transmit the necessary torque, but slip when overloaded.Accurate adjustment of the torque is made simply by turning the adjustment ring.If the torque exceeds the set limit, the control part is automatically disconnected from the driven part.

All Zetasassi torque limiters use asbestos-free friction materials, driven by Belleville washers and regulated by a lockring that serves to regulate the torque loads.

The LF torque limiters can be supplied with or without the central crown, and can also be supplied with transmission pulleys and/or wheels not shown in the catalogue.

The LF-SL model torque limiters are equipped with a mechanical slipping device that signals when the torque to transmit exceeds the set value.In case of overload, a ball mechanism causes the movement of a ring which, in turn, can signal the overload to a limit switch or proximity sensor.After eliminating the cause of the overload and thus of the limiter slippage, it is not necessary to act on the limiter, which will simply reset the signal mechanism and automatically return the ring to its initial position immediately after the transmission resumes work.

LFG torque limiters with axial joint are supplied with a crown that is inserted in the limiter, and a pinion. The two are then coupled by a double chain.This permits axial motion transmission (two rods on the same axis) and at the same time - thanks to the torque limiter - ensures protection from overloads.

The LFG model is also available with the mechanical slip device LFG-SL

The hubs, pinions and crowns are made using C40/C45 material, and are machined directly in our workshop with our CNC machinery, with very high quality control.The rest of the materials used, such as springs, lockrings and clutch disks, are made in Italy by our established suppliers.

They can be supplied already drilled and with drive spline.

All materials: hubs, flanges, lockrings, pinions, etc., are protected by galvanization. 

Note: Switches are not included 

How to select the torque load and limiter and how to calibrate it:

First of all you need to establish the safety level “L”, which does not depend only on the nominal work load but also oon the inertial forces of startup and stoppage, and on the type of motor used. 

Here is an example with electric motor, with standard startup and stoppage (standard means without particular overloads and without abrupt or excessively frequently startups) .L=1

We now have to decide the maximum torque Nm to consider:

(9550*L*Pkw)/G = Nm

Where:

L= Safety level (1)

Pkw = Motor power in kw (1.5kw)

G= Revolutions of transmission  (1430)

(9550*1*1,5)/1430= Nm 10 

So the choice of the limiter must have a load of 10 Nm or more

CATALOGUE PAGE

Download Cad
 pdf 3D File
codice 3D&2D MAX TORQUE Ø MAX HUB Price Shipping
LFGSL50UN 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
15 Nm Ø20-Ø30

Min_1_Quantity

Goods on stock
Delivery_12hours

LFGSL50 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
30 Nm Ø20-Ø30

Min_1_Quantity

Goods on stock
Delivery_12hours

LFGSL70UN 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
50 Nm Ø25-Ø35

Min_1_Quantity

Goods on stock
Delivery_48hours

LFGSL70 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
100 Nm Ø25-Ø35

Min_1_Quantity

Goods on stock
Delivery_48hours

LFGSL90UN 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
100 Nm Ø35-Ø45

Min_1_Quantity

Goods on stock
Delivery_12hours

LFGSL90 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
200 Nm Ø35-Ø45

Min_1_Quantity

Goods on stock
Delivery_12hours

LFGSL115UN 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
200 Nm Ø45-Ø55

Min_1_Quantity

Goods on stock
Delivery_12hours

LFGSL115 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
400 Nm Ø45-Ø55

Min_1_Quantity

Goods on stock
Delivery_12hours

LFGSL140UN 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
400 Nm Ø55-Ø65

Min_1_Quantity

Goods on stock
Delivery_48hours

LFGSL140 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
800 Nm Ø55-Ø65

Min_1_Quantity

Goods on stock
Delivery_12hours

LFGSL170UN 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
700 Nm Ø65-Ø75

Min_1_Quantity

Goods on stock
Delivery_48hours

LFGSL170 3Dstep
3Dsat
3Dx_t
2Ddwg
2D
dxf
1400 Nm Ø65-Ø75

Min_1_Quantity

Goods on stock
Delivery_48hours

 Similar

  1. 1
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    The type GS has various balls and a spring pile where the spring are put following a regressive method so when the established coupling is exceeded the friction is reduced to minimum values.
  2. 2
    TORQUE LIMITER "LF"
    Under normal working conditions, they transmit the necessary torque, but slip when overloaded.Accurate adjustment of the torque is made simply by turning the adjustment ring.If the torque exceeds the set limit
  3. 7
    TORQUE LIMITER WITH CHAIN COUPLING "LFG"
    LFG torque limiters with axial joint are supplied with a crown that is inserted in the limiter, and a pinion.
  4. 9
    TORQUE LIMITER WITH SLIDING INDICATOR "LFSL"
    All Zetasassi torque limiters use asbestos-free friction materials, driven by Belleville washers and regulated by a lockring that serves to regulate the torque loads.
  5. 10
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