The Hatz 1B50 is a 517 cc, (31.5 cu-in) single-cylinder air-cooled 4-stroke internal combustion diesel engine with a horizontal shaft, manufactured by Motorenfabrik Hatz GmbH & Co. KG for general-purpose applications.
This engine has a single-cylinder, overhead valves, and direct injection fuel system. The Hatz 1B50 engine can be equipped with a recoil starter or electric starter motor 12 or 24 Volts.
A 93.0 mm (3.66 in) cylinder bore and 76.0 mm (2.99 in) piston stroke give the 1B50 engine a total of 517 cc, (31.5 cu-in) of displacement. The compression ratio is 20.5:1. It produced from 55.7 PS (4.2 kW; 5.6 HP) at 1,500 rpm to 11.6 PS (8.5 kW; 11.4 HP) at 3,600 rpm of maximum output. The torque is 27.4 N·m (2.8 kg·m, 20.2 ft·lb) at 2,500 rpm.
General information
| Engine Specifications | |
| Model | 1B50 |
| Type | 4-stroke, single cylinder |
| Displacement | 517 cm 3 (31.5 cu-in) |
| Max. horsepower | 11.6 PS (8.5 kW; 11.4 HP) at 3,600 rpm |
| Max. torque (crank PTO) | 27.4 N·m (2.8 kg·m, 20.2 ft·lb) at 2,500 rpm |
| Cooling system | Forced-air |
| Lubricating system | Forced spray |
| Starting system | Recoil or electric starter motor |
| Fuel used | Diesel fuel |
| Fuel tank capacity | 5.0 L (1.32 US. gal. 1.1 Imp. gal.) |
| Fuel consumption | – |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
| 1B50 | |
| Length, mm (in) | 348 (13.7) |
| Width, mm (in) | 392 (15.4) |
| Height, mm (in) | 480 (18.9) |
| Dry weight, kg (lb) |
With recoil starter: 51.2 (112.9) With electric starter: 56.5 (124.6) |
Service Information
| Engine | |
| Maximum speed | 3,600 ± 150 rpm |
| Valve clearance | |
| Intake valve | 0.10 mm (0.004 in) |
| Exhaust valve | 0.10 mm (0.004 in) |
| Oil system | |
| Oil type |
With diesel oxidation catalyst (DOC): ACEA E6 Without diesel oxidation catalyst (DOC): CF/CH-4, ACEA: B3/E4 |
| Recommended oil | SAE 5W-30, 10W-30 |
| Oil capacity | 1.5 L (1.59 US. qt, 1.32 Imp. qt.) |
| Oil pressure | – |
Author:
Hi, It would be very useful if you could include the dimensions for the output/PTO shafts
for these engines. I’m interested in the Hatz 1B50. Thanks. Michael.