Hydraulic Bolt Tensioning Cylinder Type MS, Multi-Staged Max
Pressure 1500Bar
Product Brief
multi-stage Bolt Tensioning Cylinder type MS for bolt quality 10.9,
available standard from M16 (5/8'') up to M110 (4 1/4'').
. bolt qualities 5.6, 6.8, 8.8 or 12.9
. further technical data
. special customized designs
. a free of charge technical consultation
The bolting process
The bolt tensioning cylinder is threaded onto the bolt by use of a
hand torque wrench or a battery nut runner.
The calculated pressure is generated by an ITH high-pressure pump.
This creates a torsion and friction free elongation of the bolt.
The hydraulic pressure at the pump is directly proportional to the
pre-load force of the bolt tensioning cylinder that is applied at
the bolt.
When the pressure has been achieved the nut is tightened down by
use of a hand torque wrench for controlled torque output.
Advantages of Using Bolt Tensioning Cylinders
In the conventional system (torque value method) the pre-load force
is applied by a mounting process which shows torsion- and friction
stresses at the nut and the bolt by torqueing them together. During
this process the torqueing tool has to work against to moment of
thread pitch and the friction at the thread on both laydown
surfaces.
At the assembling process the thread friction, the head friction-
and moment of thread pitch come all together. The thread- and
moment of thread pitch can have a value of 90% of the final torque
value.
The assembly pre load shows a high deviation based on the deviation
of the friction values of the thread and under the head of the
volt. The friction value by friction class B shows a deviation from
0,08 to 0,16, by these value the preload force can deviate of about
100%.
Our technical advice
Being a whole system supplier we are not determined to one specific
bolting method - Therefore we advise you objectively and offer the
best technical and cost-effective solution
Free consultation
Contact us on any questions regarding your bolt connection or for
any technical questions. We advise you free of charge and offer a
free on-site inspection.
Multi-staged Bolt Tensioning Cylinder type MS: Corresponding
equipment
Hydraulic equipment: high-pressure hoses | couplings | nipples |
coupling distributors | test gauges.
Electric, pneumatic, manual and battery-powered high pressure
hydraulic pump series
Technical parameters for reference
Type | Threadsize | Preload forco | Stroke |
| Inch | Metric | Kn | Ton | mm |
| MS24 | 7/8’’ | M24 | 322 | 32 | 8 |
| MS27 | 1’’ | M27 | 380 | 38 | 8 |
| MS30 | 1 1/8’’ | M30 | 458 | 45 | 8 |
| MS33 | 1 1/4’’ | M33 | 567 | 56 | 8 |
| MS36 | 1 3/8’’ | M36 | 666 | 66 | 8 |
| MS39 | 1 1/2’’ | M39 | 800 | 80 | 10 |
| MS42 | 1 5/8’’ | M42 | 924 | 92 | 10 |
| MS45 | 1 3/4’’ | M45 | 1080 | 108 | 10 |
| MS48 | 1 7/8’’ | M48 | 1221 | 122 | 10 |
| MS52 | 2’’ | M52 | 1450 | 145 | 15 |
| MS56 | 2 1/4’’ | M56 | 1682 | 168 | 15 |
| MS60 | 2 3/8’’ | M60 | 1966 | 196 | 15 |
| MS64 | 2 1/2’’ | M64 | 2213 | 221 | 15 |
| MS68 | 2 3/4’’ | M68 | 2548 | 258 | 15 |
| MS72 | 3’’ | M72 | 2856 | 285 | 15 |
| MS80 | 3 1/4’’ | M80 | 3527 | 353 | 15 |
| MS90 | 3 1/2’’ | M90 | 4464 | 446 | 15 |
| MS100 | 4’’ | M100 | 5510 | 551 | 15 |
| MS110 | 4 1/4’’ | M110 | 6668 | 667 | 15 |
