A Bearings: Needle Throughout, Ball on Motor , Brushes: Externally Replaceable , Enclosure: TENV , Gear Case: Die Cast Aluminum , Gear Material: Hardened Steel , Gear Type: Helical and Spur , Housing Material: Die Cast Aluminum , Lubrication: Permanent Heavy Fluid Gear Oil , Max. Ambient Temp.: 40 Degrees C , Motor Type: DC , Mounting: All Position , Reversible Shaft Output: No , Rotation: Reversible , Seals: Spring Loaded Lip Type on Input and Output Shaft , Shaft Orientation: Parallel , Thermal Protection: None , Voltage: 90 VDC