Offered in 3 frame sizes, SPH Flange Planetary Gearbox is rated for up to 450 Nm nominal and 675 Nm acceleration torque in largest size. Helical gears are precision cut and ground for quiet, smooth torque transmission with standard backlash rating of <3 arcmin for single stage ratios. For applications that require more precision, gearbox can be assembled for reduced backlash at <1 arcmin. ISO 9409 compatible output flange allows for mounting of machine elements such as pinions and pulleys.