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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
Keyless Transmission Element

 

KEYLESS TRANSMISSION ELEMENTS which have varied and versatile applications on almost all engineering fields.The elements have great absorbing capacity of kinetic energy by elastic radial deformation of tapered rings. The method is also very simple. By expansion of the outer & shrinkage of inner rings, frictional shaft & hub connections are established, which transmits highest torques free from backlash. Read More...

N7012

Features/Technical Data

N7012-IN

Features/Technical Data

N7013.0/
N7013.1

Features/Technical Data

No self centering.
Centering guide required between hub & shaft.
No displacement of hub.
Shaft size:20 to 320mm
Torque:280 to 210500Nm.

No self centering.
Centering guide required between hub & shaft.
No displacement of hub.
Shaft size: 0.750" to 7.500".
Torque: 250 to 45640Nm.

Self centering.
N7013.0 - Slightly axial displacement of hub.
N7013.1-No displacement of hub
Shaft size:20 to 150mm
Torque:300 to 28500Nm.

 
N7030/
N7031

Features/Technical Data

N7032/
N7033

Features/Technical Data

N7134

Features/Technical Data

7030,31

Self centering.
N7030- Slightly axial displacement of hub.
N7031 - No displacement of hub.
Shaft size:20 to 180mm

7030,31

Self centering.
N7032-Slightly axial displacement of hub.
N7033 - No displacement of hub.
Shaft size:20 to 200mm

Self centering.
No axial displacement of hub.
Shaft size: 14 to 50mm
Torque: 120 to 1830Nm

Torque:N7030-540 to 57700Nm
Torque: N7031- 330 to 36000Nm
Torque:N7032- 380 to 66000Nm
Torque: N7033- 280to 50000Nm
 
N7139

Features/Technical Data

N7143

Features/Technical Data

N7014

Features/Technical Data

5011

Self centering.
Slightly axial displacement of hub.
Shaft size:18 to 90mm
Torque: 210 to 7580Nm.

7030

Self centering. No axial displacement of hub.
Shaft size:10 to 100mm
Torque: 31.4 to 9900Nm
 

Wide taper seats. High torque transmitting.
No axial displacement of hub.
Shaft size:45 to 300mm
Torque: 3140 to 249000Nm

 
N7015.0

Features/Technical Data

N7015.1

Features/Technical Data

N7040

Features/Technical Data

High torque transmitting.
Wide self releasing taper seats.
No axial displacement of hub.
Shaft size:100 to 320mm
Torque:14400 to 344000Nm

High torque transmitting.
Wide self releasing taper seats.
No axial displacement of hub.
Shaft size:100 to 320mm
Torque:6700 to 185800Nm

7030

High, low, medium torque transmitting.
Shaft size.: 45 to 360mm.
Torque: N7040 -3460 to 658000Nm

 
N7041

Features/Technical Data

N7042

Features /Technical Data

N7016.0

Features/Technical Data

7030

High, low, medium torque transmitting.
Shaft size:70 to 340mm
Torque: 5100 to 207000Nm.

7030

High, low, medium torque transmitting.
Shaft size: 70 to 340mm
Torque: 8620 to 348780Nm

Wide taper seats. High torque transmitting.
Self centering.
No axial displacement of hub.
Shaft size: 70 to 320mm
Torque:7280 to 361500Nm

           
N7016.1

Features/Technical Data

N7016.2

Features/ Technical Data

N7450

Features/Technical Data

Wide taper seats. High torque transmitting.
Self centering.
No axial displacement of hub.
Shaft size: 24 to 360mm
Torque:800 to 680300Nm

Wide taper seats. High torque transmitting.
Self centering.
No axial displacement of hub.
Shaft size: 70 to 380mm
Torque:4180 to 307000Nm

7450

High torque transmitting.
Self centering.
Slight axial displacement of hub.
Shaft size:25 to 360mm
Torque: 950 to 705000Nm.

       
N8006

Features/Technical Data

N8006-IN

Features/Technical Data

N250

Features/Technical Data

Medium /low torque transmitting.
No axial displacement of hub.
Shaft size:13 to 320mm
Torque: 13 to 114000Nm

Medium /low torque transmitting.
No axial displacement of hub.
Shaft size:0.512" to 5.906"
Torque: 8.53 to 7739.31Nm.

Medium to high torque transmitting.
Self centering.
Shaft size:12 to 130mm
Torque: 58 to 25000Nm.

           
N5010

Features/Technical Data

N5011

Features/Technical Data

N5013.0/
N5013.1

Features/Technical Data

Medium to high torque transmitting.
Self centering.
Shaft size:14 to 85mm
Torque: N 5010 - 36 to 3560Nm

5011

Medium to high torque transmitting.
Self centering.
Shaft size:14 to 85mm
Torque: N 5011 - 60 to 3900Nm.

 

 

Low / Medium torque transmitting.
Self centering.
Shaft size:15 to 150mm
Torque: N 5013.0 / N 5013.0- 29 to 7672Nm

           
N5014.0/
N5014.1

Features/Technical Data

N500

Features/Technical Data

N4051

Features/Technical Data

 

 

Low / Medium torque transmitting.
Self centering.
Shaft size:15 to 150mm
Torque: N 5014.0 / N 5014.1 - 54 to 10314Nm

Shaft coupler -External.
Medium to high torque transmitting.
No misallignment allowed.
Shaft size:17 to 80mm
Torque: 200 to 4300Nm

External clamping.
Supplying without hub.
Low torque transmitting.
Bore size:125 to 360mm
Torque: 10550 to 415000Nm.

           
N4071

Features/Technical Data

N4091

Features/Technical Data

NS12

Features/Technical Data

External clamping.
Supplying without hub.
Medium torque transmitting.
Bore size:30 to 280mm
Torque: 300 to 270000Nm.

External clamping.
Supplying without hub.
High torque transmitting.
Bore size:125 to 320mm
Torque: 15000 to 451000Nm.

External clamping.
High torque transmitting.
Bore size:9 to 100mm
Torque: 20 to 15800Nm.

           
NS22

Features/Technical Data

NS23

Features/Technical Data

   

External clamping.
High torque transmitting.
Bore size:11 to 280mm
Torque: 50 to 151000Nm

External clamping.
High torque transmitting.
Bore size:40 to 220mm
Torque: 1400 to 178000Nm.

   
           

 

KEY TRANSMISSION :-Though apparently seems simple but preparing keyway is one of the difficult machining operations- increase in cost due to various operation in involved – setting & down time + machining time + others such as : -Lateral shifting of Keyways: in process it is extremely difficult to set the centre line of the keyway exactly symmetrical and parallel with respect to the radial plane; -Heavy torsional stresses are concentrated at the corner of the keyway so shaft is weakened. -Deviation in keyway width. -Not parallel to the axis. -Inaccuracy in Key. The cumulative effect of the all above (operational) errors, is really calls for an alternative system-keyless Transmission. NMTA Keyless Transmission Elements Entirely eliminates the disadvantages of key transmission and conventional shrink connections and also involved calculations, extremely close machining tolerances - creating problems while fitting & removing parts and during repair work -adjustment, exchanging,etc. It efficiently replaces, key & polygon connections, splined shafts,etc. NMT GROUP manufactures

KEYLESS TRANSMISSION ELEMENTS which have varied and versatile applications on almost all engineering fields.The elements have great absorbing capacity of kinetic energy by elastic radial deformation of tapered rings. The method is also very simple. By expansion of the outer & shrinkage of inner rings, frictional shaft & hub connections are established, which transmits highest torques free from backlash.

Elements -Shrink Disc (is to be fitted on Hub) forming locking connection by tightening standard hex head screws provided, with standard tools. The same transmissible torque value, almost can be achieved even when varying the nominal dimesnions slightly when using the same clearances. After loosing the locking screws element is released and Hub can be moved along the shaft.

Characteristics: Elements are most suitable for securing all types of bosses and hubs on shafts and axles. -No Keyway,No extra machining No notch effect. -Perfect true running -absolutely no play. -Easy adjustability / Easy exchangeability : Need no stops. -Easy mounting :. elements are tightened using standard screws and standard tools. Extra machining or fitting work is not required. -Easy removal : release screws,saving much time, and the elements can be removed. the step angle of the double tapers prevent self-locking and ensures the the element can be released without difficulty. -Freedom from wear -Having no moving parts. -Overload protec tion effect -When the permissible load is exceeded, elements will slip. In this way, they can safeguard valuable machine components against damage.However the slip causes fretting of the contact surfaces, so elements should not be used as slip clutch. -Maintance Friendly.

Unlimited Applications The elements are used for the connection of gearwheels, chain sprockets, levers, cams, cam plates, belt pulleys, brake drums, flywheels, couplings and clutches, shaft-mounted gearing, flanges, track wheels, impellers, etc.. and are giving every satisfaction in these and countless other applications.