What is BS 2059 - straight-sided splines and serrations about?
BS 2059 is a British Standard that relates to straight parallel-sided splines, produced in holes or on shafts having a nominal size from ½ in. to 6 in. inclusive.
Provision is made for 6 equi-spaced splines in all cases irrespective of diameter and for two depth designated “shallow” and “deep”. The type is that known as “bottom fitting” (top clearance).
The nomenclature and terms used are defined in BS 2059.
The dimensions given in the tables allow for three grades of fit and apply whether the components are in the heat-treated condition or not. Details of dimensions and design of the gauges required for all sizes have been provided in BS 2059.
Who is BS 2059 - straight-sided splines and serrations for?
BS 2059 on straight-sided splines and serrations is useful for:
- The automotive industry
- The aerospace industry
- The shipping / shipbuilding industry
- The steel industry
- The aviation sector
- The manufacturing / production sector
- Manufacturers of engines / engine components
- Manufacturers of motorbikes
- Manufacturers of bicycles
- Gauge and tool makers
- Civil /mechanical / production / marine engineers
Why should you use BS 2059 - straight-sided splines and serrations?
BS 2059 discusses six splines, irrespective of the shaft diameter, with two depths known as “shallow” and “deep”. In all cases the splines are bottom fitting, i.e., they have top clearance.
It is considered that 6 splines produced to the dimensions given in the tables, are suitable for most applications requiring straight-sided splines. BS 2059 recommends the adoption of serrations or involute splines in those cases where multi-splines have been in use.
BS 2059 includes details on the maximum errors of twist permissible when a spline is considerably longer than the gauges, thus making direct measurement necessary.
Notes on a method of producing various fits and a graphical representation of such fits are also provided in BS 2059. Using BS 2059 guidelines, you have access to best practices in the manufacture of splines and serrations so that machines and motors can function optimally.
