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  • Structural bolt tightening works were carried out on a 50 metre cycle track bridge in Malaysia using Hi-Force TWP22S pneumatic torque multiplier with respective sockets. A total of 568 bolts were tightened within three days and involved tightening of M24, M27 and M30 bolts to a specific torque. #hiforce #bolttightening #torqueing #torquemultiplier
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TWH-NRH Range - Imperial

TWH120N - TWH120NRH
TWH-NRH RANGE
  • Choice of standard imperial sizes
  • Easily fitted to TWH-N drive units
  • Strong steel construction

The TWH-NRH range of imperial hexagon ratchet heads, suitable for use with TWH-N series low profile hydraulic torque wrenches, provide exceptional flexibility with across flats (AF) sizes from 1 1/16” to 6 7/8” available as standard. All models feature extremely low profile design combined with a minimum nose radius (R) that enables fitment in very confined limited access places. For even greater versatility a comprehensive range of imperial hexagon reducer bushes and square drive conversion kits to suit TWH-NRH imperial ratchet heads are also available.

  • Choice of standard metric sizes
  • Easily fitted to TWH-N drive units
  • Strong steel construction
  • Non standard and special design ratchet heads can be made to order
Hydraulic torque wrenches. Female hexagon imperial size ratchet heads.

Imperial Ratchet Head Selection Table

Bolt Size Nut AF Size For TWH27N For TWH54N For TWH120N For TWH210N For TWH430N
Model Number R mm Wt kg Model Number R mm Wt kg Model Number R mm Wt kg Model Number R mm Wt kg Model Number R mm Wt kg
5/8" 1 1/16" TWH27NRH1.1/16 10.4 1.5                        
3/4" 1 1/4" TWH27NRH1.1/4 9.7 1.6                        
7/8" 1 7/16" TWH27NRH1.7/16 9.8 1.6 TWH54NRH1.7/16 13.5 2.9                  
1" 1 5/8" TWH27NRH1.5/8 10.0 1.6 TWH54NRH1.5/8 10.8 2.8                  
1 1/8" 1 13/16" TWH27NRH1.13/16 10.5 1.7 TWH54NRH1.13/16 10.7 2.9                  
1 1/4" 2" TWH27NRH2 10.5 1.7 TWH54NRH2 11.7 3.0                  
1 3/8" 2 3/16" TWH27NRH2.3/16 10.3 1.8 TWH54NRH2.3/16 11.8 3.1 TWH120NRH2.3/16 14.7 6.1            
1 1/2" 2 3/8" TWH27NRH2.3/8 10.5 1.8 TWH54NRH2.3/8 11.8 3.2 TWH120NRH2.3/8 14.8 6.4            
1 5/8" 2 9/16"       TWH54NRH2.9/16 11.6 3.3 TWH120NRH2.9/16 14.8 6.4            
1 3/4" 2 3/4"       TWH54NRH2.3/4 11.8 3.4 TWH120NRH2.3/4 14.9 6.5 TWH210NRH2.3/4 18.3 12.1      
1 7/8" 2 15/16"       TWH54NRH2.15/16 14.8 3.5 TWH120NRH2.15/16 14.9 6.5 TWH210NRH2.15/16 18.3 12.2      
2" 3 1/8"       TWH54NRH3.1/8 12.1 3.5 TWH120NRH3.1/8 15.1 6.5 TWH210NRH3.1/8 18.5 12.3 TWH430NRH3.1/8 26.0 23.2
2 1/4" 3 1/2"             TWH120NRH3.1/2 16.9 7.9 TWH210NRH3.1/2 19.3 12.4 TWH430NRH3.1/2 26.8 23.9
2 1/2" 3 7/8"             TWH120NRH3.7/8 19.6 8.5 TWH210NRH3.7/8 19.5 12.5 TWH430NRH3.7/8 26.5 25.7
2 3/4" 4 1/4"                   TWH210NRH4.1/4 19.5 13.3 TWH430NRH4.1/4 26.9 26.1
3" 4 5/8"                   TWH210NRH4.5/8 19.3 13.8 TWH430NRH4.5/8 25.9 26.3
3 1/4" 5"                         TWH430NRH5 27.4 27.9
3 1/2" 5 3/8"                         TWH430NRH5.3/8 25.8 28.3
3 3/4" 5 3/4"                         TWH430NRH5.3/4 24.8 29.3
4" 6 1/8"                         TWH430NRH6.1/8 25.0 30.1
4 1/4" 6 1/2"                         TWH430NRH6.1/2 25.0 31.0
4 1/2" 6 7/8"                         TWH430NRH6.7/8 27.3 31.8

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