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Borelli Group 3 SAE A Cast Iron Speed Reducer – 97001 Series
The Borelli Group 3 SAE A Cast Iron Speed Reducer – 97001 Series is designed to connect hydraulic motors used in agricultural machinery, earthmoving equipment and marine applications. It supports input speeds of up to 3000 rpm and provides an output speed of 200 rpm, ensuring excellent reliability during continuous operation. Manufactured with a high-strength cast iron housing and UNI 18NiCrMo5 steel gears compliant with ISO/DIN 3990-80 standards. Optimal lubrication is achieved using SAE 90 oil.
The available variants, classified by reduction ratio, are: Ratio 2, Ratio 2.5, Ratio 3.
Borelli Group 3 SAE A Cast Iron Speed Reducer – 97001 Series
Speed reducers are used to connect hydraulic motors in self-propelled agricultural machinery, earthmoving equipment and marine applications. The Borelli Group 3 SAE A Cast Iron Speed Reducer – 97001 Series delivers high mechanical performance, supporting input speeds of up to 3000 rpm, while the output speed of the reducers is consistently set at 200 rpm. This speed reduction allows the operating speed of the connected hydraulic motor to be adjusted appropriately, optimizing power transmission.
The structural reliability of the component is ensured by its main housing, manufactured from high-strength cast iron. The internal gears, which are essential for power transmission, are designed and manufactured in strict compliance with ISO/DIN 3990-80 engineering standards. These components are manufactured from durable UNI 18NiCrMo5 steel and feature specially corrected and shaved gear teeth to minimize mechanical wear over time. The transmission shafts are manufactured from 16CrNi4 steel and securely connected to the gears using a mechanical key. The assembly also incorporates high-quality rotating components, including 6008 and 6210 bearings, together with specific oil seals measuring 40x52x7 and 50x65x8, to ensure maximum operational stability.
The mechanical torque specifications provided for this series are designed for continuous-duty operation. Under intermittent-duty conditions, the nominal torque ratings may be exceeded by up to 20%, providing an additional tolerance margin to accommodate sudden load peaks. The mechanical unit is designed to transmit a maximum power of 68 kW while maintaining a total weight of just 16 kg.
To ensure proper operation and preserve the service life of the entire reduction gearbox assembly, SAE 90 oil must be used. The maximum permitted oil capacity inside the housing is 0.300 litres. The lubricant level must be visually inspected through the dedicated oil level sight glass every 2000 operating hours. The first oil change must also be performed after the initial 100 to 150 hours of operation. During continuous operation, the operating temperature must never exceed the maximum limit of 120°C.
Mounting hydraulic motors onto speed reducers requires specific connections but offers considerable versatility. End users can purchase and install motors equipped with cylindrical shafts, which require a coupling key to ensure a secure connection. Alternatively, motors equipped with splined shafts manufactured in accordance with DIN or SAE standards can be used; in these cases, the motor can be connected directly to the speed reducer.
| Specification | Value |
|---|---|
| Housing Material | High-strength cast iron |
| Maximum Input Speed | 3000 rpm |
| Output Speed | 200 rpm |
| Gear Material | UNI 18NiCrMo5 Steel (ISO/DIN 3990-80 Standards) |
| Shaft Material | 16CrNi4 Steel |
| Maximum Operating Temperature (Continuous Duty) | 120°C |
| Lubricant Type and Maximum Capacity | SAE 90 Oil (0.300 litres) |
| Maximum Power | 68 kW |
| Weight | 16 kg |
| Model (Ratio N.1/N.2) | Torque M1 (daNm) | Torque M2 (daNm) | Power (kW) |
|---|---|---|---|
| Ratio 2 | 98 | 49 | 68 |
| Ratio 2.5 | 112.5 | 45 | 68 |
| Ratio 3 | 132 | 44 | 68 |