O-Force manufactures and supplies a full range of Transmission Parts for Caterpillar®, Komatsu®, Cummins®: Torque Converter parts, Main Clutch Parts, Transmission Box Parts, Final Drive Parts, Swing Circle Parts, and Different U-Joint, Friction Disc, Gear, and many other related products.

O-Force also provides both Rolling Bearing and Sliding Bearing. Rolling Bearing in Swing Circle, Transmission Box, Torque Converter and Final Drive; Sliding Bearing in Engine, Power Train and Undercarriage, such as Crankshaft Bearing, Transmission Bushing and Idler Bushing.