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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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HTN Metric Range

HTN RANGE
  • Integral mechanical load retaining collar
  • Working pressure 1500 Bar
  • Metric thread sizes from M24 to M100

The Hi-Force HTN range of metric top collar hydraulic nuts is specifically designed and manufactured for applications where regular, periodic opening of the joint for inspection and maintenance purposes is required. Unlike conventional hydraulic bolt tensioners, Hi-Force HTN series hydraulic nuts are designed to permanently replace standard hexagon nuts on one side of the bolted joint. Initially the bolt tension or elongation is applied hydraulically and once achieved, it is permanently retained via the integral mechanical load retaining collar.

Whilst initial investment in Hi-Force HTN series hydraulic nuts is significantly higher than the cost of standard hexagon nuts, this investment is quickly and easily recovered, when the user considers the huge time savings achieved, during joint opening and closing, when compared to using conventional hydraulic bolt tensioners or hydraulic torque wrenches. Standard range models are available for bolt sizes from M24 to M100, with other sizes available to special order. All models are 1500 Bar maximum working pressure and supplied with quick connect hydraulic couplings, compatible for use with Hi-Force air  or manually operated hydraulic bolt tensioner pumps and hoses.

Specifications

Model No. Bolt Size Capacity Effective area cm2 Stroke mm Diameter mm Height mm Weight kg Tommy Bar
kN tonnes
HTN1-M24 M24 x 3 198.27 20.21 13.22 5 72 55 1.9 TTB06
HTN2-M27 M27 x 3 216.30 22.05 14.42 5 75 55 2.0 TTB06
HTN3-M30 M30 x 3.5 252.94 25.78 16.86 5 82 57 2.4 TTB06
HTN3-M33 M33 x 3.5 252.94 25.78 16.86 5 82 57 2.4 TTB06
HTN4-M36 M36 x 4 305.83 31.18 20.39 5 88 57 2.7 TTB06
HTN5-M39 M39 x 4 344.12 35.08 22.94 6 93 58 2.9 TTB06
HTN6-M42 M42 x 4.5 397.61 40.53 26.51 6 100 62 3.5 TTB06
HTN7-M45 M45 x 4.5 475.01 48.42 31.67 6 106 64 4.0 TTB06
HTN8-M48 M48 x 5 501.40 51.11 33.43 6 110 64 4.2 TTB06
HTN9-M52 M52 x 5 563.72 57.46 37.58 6 117 67 4.9 TTB06
HTN10-M56 M56 x 5.5 746.44 76.09 49.76 8 128 74 6.4 TTB06
HTN11-M60 M60 x 5.5 905.13 92.27 60.34 8 141 77 8.0 TTB06
HTN11-M64 M64 x 6 905.13 92.27 60.34 8 141 77 8.0 TTB06
HTN12-M68 M68 x 6 999.85 101.92 66.66 8 150 78 8.8 TTB08
HTN13-M72 M72 x 6 1203.43 122.67 80.23 8 162 81 10.6 TTB08
HTN13-M76 M76 x 6 1203.43 122.67 80.23 8 162 81 10.6 TTB08
HTN14-M80 M80 x 6 1413.72 144.11 94.25 10 174 87 12.9 TTB08
HTN15-M85 M85 x 6 1605.04 163.61 107.00 10 187 95 16.2 TTB10
HTN15-M90 M90 x 6 1605.04 163.61 107.00 10 187 95 16.2 TTB10
HTN16-M95 M95 x 6 1704.59 173.76 113.64 10 194 102 18.3 TTB10
HTN17-M100 M100 x 6 1911.46 194.85 127.43 10 205 110 21.9 TTB10

Note: Tommy bars are not included. Hi-Force recommends one tommy bar for every four tensioners. 

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