Yes. We can supply you with the following torque shafts:

• Torque shafts cut to the required dimensions
• Shafts or hollow shafts machined to customer drawings
• Reworked torque ball bushes, e.g. with additional holes or flattening on the flange

Yes. As with a conventional ball bushing, the balls are held in place by a cage. When removing, however, care must be taken to ensure that the bushing and thus the lugs on the wiper are not twisted. Therefore, before inserting the shaft into the torque ball bushing, it must also be checked that the ball tracks and the lugs of the seal are in line.

The main difference is the shaft diameter.

As experts, we only supply hardened and ground shafts made of Cf53, also as hollow shafts or hard chrome-plated, and corrosion-resistant solid shafts made of 1.4112.

Niro-Wellen und Kugelbuchsen sind nicht aus tenitischem Edelstahl gefertigt, sondern aus martensitischem Edelstahl, da dieser für Kugellagerungen härtbar sein muss. Daher hat dieses Material auch ferritische Eigenschaften wie die
Magnetisierbarkeit.

Obwohl Niro-Toleranzhülsen aus tenitischem, nicht magnetisierbarem 1.4301 sind, entsteht durch das Kaltwalzen des Bandmaterials und dem Umformen zur Toleranzhülse ein martensitisches Gefüge, was für die Magnetisierbarkeit verantwortlich ist.

Our ball bushings are only preserved with an anti-corrosion oil and are greased by the customer during assembly. This initial greasing is usually sufficient for lifetime lubrication.

The only exception here are our torque ball bushings. These are initially greased at the factory and must also be relubricated regularly. (Under normal conditions every 6 months or after 1000 km)

The following applies to standard ball bushings: max. inner diameter (d as per catalog) - min. shaft diameter = max. play
For example, for NB02-030 and 30h6 shaft: 30.011 - 29.987 = 0.024 mm.
However, as at least 2 shafts are generally used for a ball bushing guide, the play is reduced by misalignment and shaft offset. If a backlash-free guide is required, slotted KB with slotted, adjustable housings can be used.