smartTensioner Bolt Tensioner Configurator

After reaching target pressure and the requested axial bolt force, the nut is turned manually using a torque wrench using a 1/2" shaft adapter. The gear drive has been designed for rough and difficult environments allwoing to loosen even rusty or dirty nuts. The adapter shaft and the gears are made of high grade steel. Using a cordless screwdivrt is also possible.

After reaching target pressure and the requested axial bolt force, the nut is turned manually using a tommy bar and an integrated nut adapter.

After reaching target pressure and the requested axial bolt force, the nut is turned automatically by an integrated high-torque motor. Controlled by the integrated pump, the Automatic Nut Gear Drive allows operating the whole tensioning and de-tensing process without any manual interaction. In addidtion, during the tensiong process the nut is stepwise tightend and the pressure is slightly realeased. This is the fastest way to tension a bolt and to get the lowest setting losses.

The gears are made of high grade steel. If the provided motor torque should not be sufficient, an additional 1/2" shaft adapter allows turning the nut with a wrench.

Manual piston return

After use, the piston of the BoltTensioner might not be in it's initial position. It therefore needs to be pressed back using an appropriate press. We only recommend this option for seldom used tensioners.

Spring piston return

Since all smartTensioner BoltTensioeners feature an integrated pump, the amount of oil is low. This allows us to use integrated springs to automatically pull the piston back in it's initial position ofter use. This system does not need any manual interaction.

Hydraulic piston return

For bigger tensioners or tensioners with long stroke, we recommend our HydraulicPistonReturn-system. After manually operating an integrated valve, the pump is used to press the piston back in it's initial postion.

Small Pump - 1

Our smallest pump recommended for threads up tp M36 / 1 1/2". It weighs only 1.5 kg.

Medium Pump - 2

Our medium pump recommended for threads up tp M72 / 3". It weighs 2.5 kg.

Large Pump -3

Our biggest pump recommended for threads bigger than M72 / 3". It weighs 4.0 kg.

The AutomaticOutlettValve allows operating the pumps pressure valve automatically or manually using our (wireless) pump control software. It is very useful if at some pint during the tensiong process the individual BoltTensioner pressure needs to be reduced.

The NutAdapterSpring allows to mount the BNoltTensioner in any position of the hexagonal nut. If the nut adapter should not match with the nut, it is shifted upwards. After the turnimng the adapter, it will glide on the nut supported by a spring.

Strongly recommended feature: If the piston should be moved beyond it's stroke, it might be pressed out of the cylinder. With smartTensioner, this is not dangerous because the amaount of compressed oil is so low. However, pressing the piston back will destroy the sealings. The PistinStrokeLimitation automatically stops the pump when the pistion has reached it's max. position.

Our Pumps can be operated by a small panel on the top of the pump. However, using several pumps at once is easier using our smartTensioner pumpControl-Software: Available on an simple Android tablet PC, it allows controlling all pumps at once and synchromnizes the pumps agaoinst each other to ensure even force distribution.

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