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1. FREEWHEEL ONE WAY CLUTCH » SPRAG CLUTCH » CAM CLUTCH » UNIDIRECTIONAL CLUTCH. 2. HOLDBACK DEVICE » BACK STOP DEVICE. 3. KEYLESS TRANSMISSION ELEMENTS » LOCKING ASSEMBLIES » SHRINK DISCS » LOCKING ELEMENTS » TAPER LOCK. 4. TENSIONER NUTS & BOLTS » SUPER BOLT. 5. CAM FOLLOWER » TRACK ROLLER
Freewheel One Way Clutch
 

One way clutch (Freewheels) : The application of clutch is for economic solution, to reduce the cost compared with separately controlled couplings/brakes, ratchet arrangements etc; in some design. Clutch is preferred to conventional solutions because of its advantages in operating safety & better automatization. No Driving Contact between inner & outer ring, while in rotation, in one direction and driving contact between inner & outer ring, which transmit torque in the other direction of rotation.These Clutches should never be dismantled at users end.
To minimize critical stresses in keyway area of inner ring keyways have radius instead sharp corner, hence the Keys must be chamfered on their edges.  Read more

Sizes other than Specified are on request

 

 

 

 

 

NMT 01

Technical Data

NRT 01

Technical Data

NFS

Technical Data

NMT01

Roller type, with bearing support.
Tapped holes on face to mount part.  

Bore size:- 14mm to 75mm.
Torque:110 to 3200Nm

NSO

Sprag type, with bearing support. Tapped holes on face to mount part.  
Bore size:- 14mm to 180mm. Torque:200 to 80000Nm

NFS

Sprag type, with bearing support.
Outer dia. having flange to mount.
Bore size: 15 to 80mm
Torque: 270 to 8150Nm

           

NFR

Technical Data

NSO

Technical Data

NLS

Technical Data

NFS

Roller type, with bearing support.
Outer dia. having flange to mount.

Bore size: 12 to 90mm
Torque: 34 to 7480Nm

NSO

Sprag type, with bearing support,
enclosed condition.  

Bore size: 12mm to 75 mm           

Torque: 335 to 5760Nm

NLS

Sprag type, with bearing support.
Bore size:14 to80 mm
Torque: 360 to 8200Nm

           

NLR

Technical Data

NLRE

Technical Data

NA/NAF

Technical Data

NLR

Roller ramp type, with bearing support,
enclosed condition.
Bore size: 14mm to 80 mm  
Torque: 165 to 6580Nm

NAH

Roller ramp type, with bearing support,
enclosed condition.
Bore size: 14mm to 120mm
Torque: 90 to 14400Nm.

 

NAH

Sprag type without bearing support.  
Model NA : Bore size: 12mm to 85 mm
Model NAF : Bore size: 21 to 108 mm

       

Model NAF : shaft required hardened & ground. 
Torque: 65 to 2440Nm

           

NAH

Technical Data

NAS

Technical Data

NB/NBF

Technical Data

NAH

Sprag type, without  bearing support,
enclosed condition.
Bore size: 20mm to 90 mm  
Torque: 220 to 4700Nm

NAH

Sprag type, without bearing support.
Bore size: 15 to 90mm
Torque: 460 to 5700Nm.

NBF

Sprag type, without bearing support.
Centering of ring is required.
Model NB -  Bore size: from 12mm to 60 mm

       

Model NBF -Bore size: from35 to 85 mm
NBF model shaft required hardened & ground.
Torque: 72 to 720 Nm.

           

NG/NGF

Technical Data

NM/NMF

Technical Data

ND/NDF

Technical Data

NG

Sprag type, without bearing support.
Centering of outer ring is required.  
Model NG - Bore size:12mm to 45 mm

NMF

Sprag type, without bearing support.
Centering of outer ring is required.
Model NM - Bore size: 12mm to 45 mm

NDF

Sprag type, without bearing support.
Centering of outer ring is required. 
Model ND-Bore size:12mm to 45 mm

Model NGF - Bore size:25 to 61 mm
Model NGF  shaft required hardened & ground.
Torque: 90 to 460Nm.
Model NMF - Bore size: 35 to 85 mm
Model NMF - shaft required hardened & ground.
Torque: 130 to 1530Nm.
Model NDF - Bore size:34.92 to 69.85 mm
Model NDF  shaft required hardened & ground.
Torque: 190 to 690Nm
           

N200

Technical Data

NO

Technical Data

NLD

Technical Data

NO

Sprag type, without bearing support,
without inner race.
Centering of outer ring is required.
Bore size:0.740Inch to 2.209Inch.

NO

Sprag type, without bearing support.
Centering of outer ring is required.  
Bore size: 15mm to 70 mm
Torque: 120to 2070Nm

NLD

Roller type, without bearing support.
Slot on face to hold. 

NLD Model Bore size: 20 to 80mm
Torque: 50 to 1300Nm.

Shaft required hardened & ground.
Torque: 90 to 840Nm

       
           

NMD

Technical Data

NC

Technical Data

   

NMD

Roller type, without bearing support.
Slot on face to hold. 
NMD Model Bore size:20 to 60mm
Torque: 80to 1800Nm 

NC

Outer diameter indentical with
62 Series Ball bearing
Bore size:20 to 55mm
Torque: 65 to 500Nm

 

           

 

 

The Functions of clutches

Indexing / Feeding : is to convert motion either from a continuously rotating shaft on intermittent basis OR by converting the reciprocating linear motion of a Pneumatic / Hydraulic cylinder into an intermittent rotary motiion.The rotary motion of the drive shaft is converted into an intermittent rotary motion by means of a hold pin and connecting rod attached to arm of the freewheel whose arc of index can be varied as required by adjusting slot. Especially when clutch is used as a indexing clutch, the Key connections must be free from play. The best indexing application is reached with unalloyed oils with a low degree of viscosity.

Overrunning: The inner ring can rotate faster then the outer ring in same direction of input and if stopped inner ring continues to rotate of input and if stopped inner ring continues to rotate at input speed and vice versa.  E.g. if a large motor or turbine has to be up to speed, by a slow speed starter motor, the use of freewheel between these elements enables the starter motor to be shut down without any mechanical involvement. If a freewheel is interposed in a drive between a gearbox / a large machine, the freewheel prevents any back drive OR damage to gearbox if at all any power failure. In this function, if the direction force / rotation changes, there will be automatic obstruction of connection between the component(s) and coupled machine.

Backstopping / Holdback: The Purpose of backstopping is to providing a return OR reverse lock. This smoothly permits rotation of the drive shaft by overrunning in one direction but immediately locks if the shaft by attempts to go on reverse, such as in inclined conveyors, elevators etc. in case of power failure OR motor is switched off, to avoid the conveyor load from running back.

Lubrication: Most clutches especially indexing and clutches with high speed overrunning are provided with unalloyed, acid free, low viscosity oil. Oil must be changed initially after about 80 operating hours & there after approximately 1500 operating hours .depending on the environment, refilling up to 1/3 level.

Applications: in all industries: Agricultural Machines - Fertilizer spreaders, Straw Presses, Feed Cutters, Tractor Distribution Gear, Plant Sprayers)Air craft - Power Transmission unit, Generator Construction- Cement Mixtures, Barrel Mills, Drilling Rigs) Drying - Furnaces, continuous Ovens. Food - Bottling Corking & dosing Machines, General Drives- Electric Motors, Worm Drive gearbox, Hoisting & Conveying Device - Elevator Drive, Bucket Conveyor, Screw Pumps, Leather - Tanning & Curing, Drying & Sewing, Machine Tools - Presses & Shapers. Packaging, Paper & Printing - Tube filling, Wrapping , Labeling, Paper Production, Inking & Feed Rollers. Power Plant: Turbine Starter, Blower, Pumps & Compressors: Vacuum Pumps , Turbo Compressors, Rubber & Plastic: Injection Moulding Textile - Blow Room -Machinery : Double rib & Jacquard loom, Circular & flush stitch machines, Wire processing, Fishing Net Machinery.