NORBERT WOLFF

Hardened to 780 ±40 HV 10 and ground. Without leadin groove. Note All bushes have the bore size marked on the upper face, e.g. 10. Diameters D1 over 15 mm increase in size by 0.5 mm. Dowels or coiled spring pins together with DIN 1731 flathead screws can be used in place of the stop pin.

While Coiled Spring Pins are extremely versatile self-retaining fasteners that can be used for many different functions, SPIROL has designed several series of Coiled Pins to meet the nuances and performance requirements of some particular niche applications. These Coiled Spring Pins are variations of our standard product either manufactured from special material, have a special finish or undergo specific processing to meet performance, corrosion, compatibility and assembly requirements for the specific application. These pre-designed application-specific series of Coiled Pins help companies shorten the design cycle to confidently launch their product quickly to their market with a pinning solution that has been tested and proven within their assembly.

SPIROL invented the Coiled Spring Pin in 1948. Truly an engineered fasteners, the Coiled Pin is available in three duties, light, standard and heavy, to enable the designer to choose from the optimum combination of strength, flexibility and diameter to suit different host materials and application requirements. Their shock absorbing design dampens forces and vibration to prevent hole damage and prolong assembly life. Light Duty Coiled Spring Pins are generally recommended for soft, brittle or thin materials such as plastics, aluminium, die castings, ceramics, and where holes are located close to an edge of the assembly. In situations not subjected to significant loads, such as when used purely for alignment or as an axle, light duty Coiled Pins are often used because of easy installation resulting from lower insertion force.

Technical Data Mat EN 10270-3-1.4310 - type of material Oefo 1/1 deutsche - loop shape Oest 180 degree loop position Oesttol 25 degree (+/-) tolerance of loop position d 0.2 mm Wire diameter D mm mean coil diameter De 2.7 mm outer coil diameter Detol 0.15 mm (+/-) tolerance of outer coil diameter Dh 3.2 mm minimum bush diameter F0 0.061 N initial tension Fn 1.101 N Maximum spring force Fntol 0.13 N (+/-) tolerance of maximum spring force Lk 2.5 mm length of unstressed spring body L0 6.2 mm length of unstressed spring, measured from inner edge of loop to inner edge of loop L0tol 0.6 mm