Caterpillar R5 Specs ( 1934-1940 )
Overview
The Caterpillar R5 is a farm-type agricultural crawler tractor produced in Peoria, Illinois, between 1934 and 1940. It features a 10.1L 4-cylinder gasoline engine and was tested at a maximum of 58.89 belt horsepower and 49.44 drawbar horsepower.
Ideal Applications
Tested Drawbar Performance:
According to Nebraska Tractor Test 224, the R5 achieved a maximum pull of 10,834 lbs using its 16-inch tracks and 4-speed gear transmission.
Belt Pulley Specifications:
The unit is equipped with a 12-inch diameter belt pulley that operates at 950 RPM with a width of 8.5 inches, delivering a tested maximum power of 58.89 hp.
Mechanical Configuration:
The tractor features an open operator station, a dry disc clutch, and a crawler drive system with 71.4 inches of track length on the ground providing 2,284 square inches of contact area.
Production
| Description | Agricultural Crawler tractor / Built in Peoria, Illinois, USA / The Caterpillar R5 was originally a special-order machine for the US Government. It was first based on the Thirty-Five, then the Forty. Later models were the gas counterpart to the RD6. |
|---|---|
| Manufacturer | Caterpillar |
Engine
| Engine type | Caterpillar 10.1L 4-cyl gasoline |
|---|---|
| Fuel tank | 50 gal (189.2 L) |
| Bore/Stroke | 5.50x6.50 inches (140 x 165 mm) |
| Coolant capacity | 37 qts (35.0 L) |
| Description | Caterpillar / gasoline / 4-cylinder / liquid-cooled |
| Displacement | 618 ci (10.1 L) |
| Oil capacity | 14 qts (13.2 L) |
| Rated RPM | 950 |
| Belt (claimed) | 58 hp (43.3 kW) |
| Belt (tested) | 58.89 hp (43.9 kW) |
| Drawbar (claimed) | 50 hp (37.3 kW) |
| Drawbar (tested) | 49.44 hp (36.9 kW) |
Transmission
| Clutch | dry disc |
|---|---|
| Gears | 4 forward and 1 reverse |
| Oil capacity | 20 qts (18.9 L) |
| Transmission type | 4-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive | crawler |
Dimensions & Tires
| Gauge | 56 inches (142 cm) |
|---|---|
| Ground clearance | 9.75 inches (24 cm) |
| Height | 69.3 inches (176 cm) |
| Length | 139.4 inches (354 cm) |
| Weight | 13675 lbs (6202 kg) |
| Width | 72.5 inches (184 cm) |
Belt Pulley
| Diameter | 12 inches (30 cm) |
|---|---|
| RPM | 950 |
| Width | 8.5 inches (21 cm) |
Caterpillar R5 Tracks
| Area on ground | 2284 in² (1.5 m²) |
|---|---|
| Length on ground | 71.4 inches (181 cm) |
| Width | 16 inches (40 cm) |
Dimensions & Tracks
| Description | 16-inch tracks |
|---|---|
| Weight | 13675 lbs (6202 kg) |
Nebraska Tractor Test 224
| Belt power (max) | 58.89 hp (43.9 kW) |
|---|---|
| Description | Gasoline 4-speed crawlerJuly 12 - 20, 1934Link: Nebraska Tractor Test 224 file / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
| Max power | 49.44 hp (36.9 kW) |
| Max pull | 10834 lbs (4914 kg) |
R5 Serial Numbers
| 1934 | 5E3001 |
|---|---|
| 1935 | 5E3086 |
| 1936 | 5E3421 / 4H501 / 4H1132 |
| 1938 | 4H936 |
| 1940 | 4H1320 / 3R1 |
| Description | FAQ: How to read a serial number table. |
References
| Description | 50 Drawbar Horsepower Tractor published in 1934, by Caterpillar |
|---|