Locking assembly BAR bore 8mm QPQ-coated
| d [mm] | 8 |
|---|---|
| D [mm] | 18 |
| L [mm] | 11 |
| L1 [mm] | 10,5 |
| L2 [mm] | 13,5 |
| M t (transferable at MA) [Nm] | 12 |
| P ax (at MA transferable) [k N] | 3 |
| Surface Pressure Shaft PW [N/mm²] | 141 |
| Surface Pressure Hub PN [N/mm²] | 62 |
| Clamping Bolts Size | M2,5 x 10 |
| Tightening Torque TA [Nm] | 1,2 |
| No. of Clamping Bolts | 3 |
| Weight [kg] | 0,015 |
- For fixing a hub on a shaft. - QPQ coated: High corrosion resistance, improved fatigue strength, primarily food safe (further information see below). - For medium torques. - Self-centering. - Slight axial offset possible during assembly.
Fit, Surface: Due to the special design of the BAR clamping set even rough fits can be bridged with excellent self centering capacity. Shaft and hub up to Quality h8/H8. Surface finish for shaft and hub Rz < 12 µm.
QPQ Surface Properties: Very good corrosion resistance, better than hard chrome or chem. nickel. Corrosion resistance in the salt spray test SS CASS in accordance with DIN 50021. Layer thickness of 10 - 25 µm possible. For medium operational demands we recommend a layer thickness of 15 µm at a 90 minute treatment. Only very small changes in dimensions (only 5 µm), as the surface modification is achieved through diffusion and not application. Surface hardness same as clamping set material = 350 HV. Improved wear resistance, no fretting corrosion, no cold shut. Increased endurance strength, sometimes up to 100% higher. Is completely safe to use with food as long as there is no contact with any acidic substances with a pH-value of = 4.
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