This is the second version Lenco idler. The main different between the 1st version and this Idler Wheel for Lenco L75/L78 (3.0mm) one is we have been making the wheel solid.
A solid idler without holes proved to be more listen in operation as there will be less/no noise from the turbine effect.
The increase mass also provide better working stability.
With this idler Wheel for Lenco L75/L78 (3.0mm), we ship with 2 O rings, 3.5mm OD and 4.0mm OD. Reason 1, the clearance between the motor and the platter won’t be the same with old Lenco. So, in case 3.5mm doesn’t drive up the platter properly, 4.0mm O ring will improve the situation. Reason 2, they sound different. Do check with you hear which is better.
However, when the surface of the shaft is not good, e.g. it is very common that there are wearing marks at 33.33rpm position, then 3.5mm OD O ring will provide better “cushion” effect to reduce unwanted vibration.
Computerize CNC machine make This idler to it highest precision.
Dimension of Idler Wheel for Lenco L75/L78:
Height at the centre: 3.0mm version = 17.5mm
Nominal OD: 64.40mm (with 3.5mm O ring)
Nominal OD: 65.40mm (with 4.0mm O ring)
Same as all products from us, if you are not satisfied with the result, we shall refund in full within 3 months after your purchase.