Dimension standards

ISO 2982-1

Tolerances

Aperture： JS9
Width： h13

External taper

Standard: 1:12
A(O)H 240 and A(O)H 241     Serial standard: 1:30

Thread

Bore diameter ≤ 180 mm（size ≤ 38）： Metric thread, conforming to ISO 965-3, proper cooperation, Yuxi adapter sleeve, nut disassembly
Bore diameter ≥ 190 mm（size ≥ 40）： Metric trapezoidal thread, conforming to ISO 2903, proper cooperation, Yuxi adapter sleeve, nut disassembly

For other locking nuts not given in the product list, the thread requirements are as follows:
Bore diameter ≤ 180 mm（size ≤ 38）：
Tolerance 5H – ISO 965-3
Bore diameter ≥ 190 mm （size ≥ 40）：
Tolerance 7H – ISO 2903

Shaft tolerances

h9
Total radial runout: IT5/2 – ISO 1101
The withdrawal sleeve can be adjusted according to the shaft diameter, so it allows a large diameter tolerance range compared to directly mounting the bearing directly in a cylindrical bore. However, geometric tolerances must be maintained within a narrow range because they directly affect shaft positioning and vibration.