Power: 41 hp[B] Date of manufacture : 1933 - 1935
Production Manufacturer: Caterpillar Type: Agricultural Crawler tractor Factory: Peoria, Illinois, USA Total built: 1171 Caterpillar Twenty-Eight Power Drawbar (claimed): 30.5 hp 22.7 kW Belt (claimed): 37.5 hp 28.0 kW Caterpillar Twenty-Eight Engine Mechanical Chassis: crawler Cab: Open operator station. Transmission: 3-speed gear Photos Caterpillar Twenty-Eight photos... Power Take-off (PTO) Rear RPM: 540 (1.375) Dimensions & Tracks Weight: 7870 lbs 3569 kg 42-inch tracks Full dimensions and tracks ... Belt Pulley Diameter: 11.75 inches 29 cm Width: 6.5 inches 16 cm RPM: 935 Speed: 2580 ft/min 786.38 meters/min

Caterpillar Ten	Power: 15 hp[B]	Date of manufacture : 1928 - 1932

Caterpillar Thirty	Power: 40 hp[B]	Date of manufacture : 1925 - 1938

Caterpillar Thirty-Five	Power: 48 hp[B]	Date of manufacture : 1932 - 1934

Caterpillar Twenty	Power: 32 hp[B]	Date of manufacture : 1927 - 1931

Caterpillar Twenty-Eight	Power: 41 hp[B]	Date of manufacture : 1933 - 1935

Caterpillar Twenty-Five	Power: 33 hp[B]	Date of manufacture : 1931 - 1933

Caterpillar Twenty-Two	Power: 32 hp[B]	Date of manufacture : 1934 - 1939

Century 2028	Power: 30 hp	Date of manufacture : 2002 - 2004