The Model 702 Size 20 Encoder is a heavy duty, extremely rugged, reliable, yet compact industry standard 2"(50.8mm) diameter encoder, designed for harsh factory and plant floor environments. The double-shielded ball bearings are rated at 35 Kg maximum axial and radial shaft loading to ensure a long operating life. Made to withstand the harsh effects of the real world, both the flange and servo models are rated IP67 with the optional heavy duty shaft seal. With a variety of mounting options in both the flange and servo models, the Model 702 is ideal for both new applications and replacements. If you need an encoder that won't let you down, the Model 702 is it.