Parallel Gear Shaft Units
Tramec Parallel Gear Shaft units, Built in 6 sizes with single reduction stage, in 6 sizes with two reduction stages and in 6 sizes with three reduction stages. Two input types are available : with projecting input shaft – ZA, with pre-engineered motor coupling – ZF (bell and joint).
Gear unit body in engineering cast iron, EN GJL 200 UNI EN 1561 (71-180) or spheroidal graphite cast iron EN GJS 400-15U UNI EN 1563 (200-225). It is ribbed internally and externally to guarantee rigidity it is machined on all surfaces for easy positioning. The single lubrication chamber guarantees improved heat dissipation and better lubrication of all the internal components.
The helical spur gears are built in 16CrNi4 or 18NiCrMo5 UNI7846 quench-hardened and case-hardened steel. The first stage is ground. The use of high-quality tapered roller bearings on all shafts ensures long life, and enables very high external radial and axial loads.
The standard hollow output shaft made of steel (shrink disc available on request), the option of mounting an output flange on the side opposite to the input shaft the possibility of mounting a backstop device make these gear units extremely versatile and easy to install.