Keyways are British Standard Metric B S 4235. Part 1: 1972 DIN 6885 and conform to ISO recomendations with the exception of those marked, which are shallower. Where a key is to be used it should be parallel and side fitting, with top clearance. Depth of keyway is measured at the CENTRE
Our pulleys can be used for application with a speed up to 35m/s. The pulley dimensions are very accurate as they are manufactured only by means of CNC or automatic lathes.
For higher speed is strongly recomended to use steel as material of construction. Our PBT pulleys are satically balanced according to ISO.
The PT pulleys are not balanced, as they do not have a finished bores.
Here are the dimensions of "PBT" SPB with taper bush 1610 :
- Belt type : SPB
- Taperbush : 1610
- Shaft diameter range : 12 - 42 mm
- Pitch diameter : refer to numbers writen after "PBT" in every product name.
For example, product name : PBT100SPB1 (1610); so, the pitch diameter is 100 mm
- Outside diameter : you can add the pitch diameter with 7 to know the length of outside diameter.
For example, the product is PBT100SPB1 (1610); so the outside diameter is 100 + 7 = 107 mm
- Groove : refer to the last number in every product name.
SITEX® gear couplings consist of two toothed hubs which are connected with one internally toothed sleeve. The hubs are made of steel and the teeth, which are both profiled and section crowned, are obtained from milling. The sleeve is manufactured from stabilized 6.6 superpolymade resin.
Coupling are available from stock, both the standard and the "long" hub execution, which entirely covers the motor shaft.
Here are the dimensions of couplings with"long" hub execution :