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Borelli Group 2 SAE A Cast Iron Speed Reducer – 97500 Series
The Borelli Group 2 SAE A Cast Iron Speed Reducer – 97500 Series is ideal for connecting hydraulic motors used in agricultural machinery, earthmoving equipment and marine applications. Designed to operate at input speeds of up to 3000 rpm, it ensures excellent performance thanks to its UNI 18NiCrMo5 steel gears and high-strength cast iron housing. SAE 90 oil lubrication ensures thermal stability during continuous operation at temperatures of up to 120°C.
The available product codes are: 97501, 97502, 97503.
Borelli Group 2 SAE A Cast Iron Speed Reducer – 97500 Series
Speed reducers are used to connect hydraulic motors in self-propelled agricultural machinery, earthmoving equipment and marine applications. The output speed of these reducers is consistently set at 200 rpm. Accordingly, the operating speed of the connected hydraulic motors is adjusted to ensure efficient performance, provided that the input speed never exceeds the maximum limit of 3000 rpm.
The Borelli Group 2 SAE A Cast Iron Speed Reducer – 97500 Series features a housing manufactured from high-strength aluminium and cast iron, designed to withstand demanding operating cycles. The internal gears are carefully designed in full compliance with ISO/DIN 3990-80 industrial standards and manufactured from high-quality UNI 18NiCrMo5 steel. The gear teeth are precisely corrected and shaved to maximize accuracy and reduce friction. For power transmission, the shafts are manufactured from robust 16CrNi4 steel and securely connected to the gears using dedicated mechanical keys.
The torque ratings specified for the speed reducers are optimized for continuous-duty operation. Under intermittent-duty conditions, the nominal torque ratings may be safely exceeded by up to 20%. The component has a rated power of 18 kW and a compact total weight of 10 kg, making installation easier in confined spaces.
For maintenance, the correct use of SAE 90 oil, with a maximum oil capacity of 0.220 litres, ensures excellent operation and extends the service life of the assembly. The oil level must be visually inspected through the dedicated sight glass every 2000 operating hours. The first oil change is mandatory after the initial 100-150 hours of operation. Finally, to prevent thermal damage, the operating temperature during continuous duty must never exceed 120°C.
Mounting hydraulic motors onto these speed reducers requires specific connections but offers considerable versatility. Users can connect motors equipped with cylindrical shafts, which require a standard coupling key. Alternatively, motors featuring splined shafts compliant with international DIN or SAE standards can be used; in these cases, power transmission takes place through direct coupling.
| Specification | Value |
|---|---|
| Maximum Input Speed | 3000 rpm |
| Output Speed | 200 rpm |
| Housing Material | Aluminium and cast iron |
| Gear Material | UNI 18NiCrMo5 Steel (ISO/DIN 3990-80 Standards) |
| Shaft Material | 16CrNi4 Steel |
| Maximum Power | 18 kW |
| Weight | 10 kg |
| Lubrication | SAE 90 Oil (Maximum Capacity: 0.220 litres) |
| Maximum Operating Temperature | 120°C (Continuous Duty) |
| Model | Motor Coupling Details |
|---|---|
| 97501 | Cylindrical Shaft (Requires Key) |
| 97502 | Splined Profile: SAE 6B |
| 97503 | Splined Profile: DIN 5482-B 25×22 |