Komatsu 37B-1BR-5120 Wheel Brake Assembly RH

The 37B-1BR-5120 is a right-hand wheel brake assembly designed for Komatsu internal combustion forklifts in the FD20-30 and FG20-30 series (models -16 and -17). It serves as a direct OEM replacement for the service brake on the drive axle. The assembly includes brake shoes, wheel cylinder, adjuster, and mounting hardware pre-assembled on a backing plate. Key engineering parameters: brake drum inner diameter 100 mm, outer diameter 352 mm, total height 80 mm, brake shoe lining width 60 mm. Mounting flange features 8 bolt holes. Single hydraulic wheel cylinder actuates the leading-trailing shoe arrangement. Unit net weight is 10.3 kg. Compatible with Nissan K21, K25, GK21, GK25 engines used in these forklift models. Also cross-references to Allis-Chalmers AC37B-1BR-5120.