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Borelli Splined Coupling Halves with Cylindrical Bore – 10000 Series
The Borelli Splined Coupling Halves with Cylindrical Bore – 10000 Series ensure excellent mechanical connections in hydraulic systems. Manufactured from heat-treated UNI 16CrNi4/Pb steel, they provide maximum reliability. Variants manufactured from quenched and tempered UNI 38NiCrMo4/Pb steel with Tenifer nitriding treatment offer mechanical strength of R = 95–105 kg/mm². Featuring DIN 5482 B spline profiles, they are suitable for various pump groups, with configurations ranging from 12 to 23 teeth. The available product codes are: 10027, 10028, 10029, 10030, 10031, 10032, 10034, 10037, 10041, 10042, 10045, 10047, 10048, 10053.
Borelli Splined Coupling Halves with Cylindrical Bore – 10000 Series
The Borelli Splined Coupling Halves with Cylindrical Bore – 10000 Series provide a high-performance technical solution for power transmission in hydraulic systems. Precision-engineered to meet demanding technical requirements, these components ensure robust and reliable mechanical connections between motor shafts and hydraulic pumps. The 10000 Series has been developed for seamless integration into high-performance hydraulic systems, ensuring tight tolerances, maximum operating efficiency and a significant reduction in mechanical vibration during continuous operating cycles.
The performance of these splined coupling halves is based on the careful selection of materials. The standard version of the Borelli Splined Coupling Halves with Cylindrical Bore – 10000 Series is manufactured from UNI 16CrNi4/Pb steel. This material undergoes specific heat treatments to optimize wear resistance and toughness, ensuring a long service life even under demanding operating conditions. For applications requiring even higher mechanical specifications, the range includes special variants (identified by an asterisk in the manufacturer’s technical datasheets). These advanced versions are manufactured from quenched and tempered UNI 38NiCrMo4/Pb steel. To further increase surface hardness and fatigue resistance, these models undergo a nitriding treatment known as the Tenifer process. This advanced treatment provides exceptional mechanical strength, ranging from R = 95 to 105 kg/mm², making the components suitable for withstanding pressure peaks and extreme torsional loads without structural deformation.
A distinctive feature of this series is its spline profile, which complies with the strict DIN 5482 B standard. This specific profile ensures precise engagement and uniform stress distribution along the tooth flanks, reducing premature wear. The 10000 Series offers a wide range of DIN 5482 B spline profiles, from the smallest dimensions of 20×17 mm to larger 48×44 mm configurations, meeting various transmission shaft sizing requirements. The number of teeth also varies according to the specific model, with configurations featuring 12, 14, 17, 18, 20 and 23 teeth, allowing precise and flexible design of hydraulic pump assemblies.
The versatility of the Borelli 10000 Series coupling halves is demonstrated by their extensive compatibility with various types of hydraulic pumps. The catalogue models cover pump types 0.5, 9.5 Turolla, 1, 2 and 3. Regarding pump group assembly, the series supports multiple configurations, ranging from groups 1/0.5, 1/0.6 and 2/0.5 to more complex arrangements such as 2.5/3, 3/2, 3.5/1 and 4/1. The key dimensional parameters (cylindrical bore A, external diameter B, dimensions C and D, and overall length L) are precisely calculated. For example, dimension L (length) ranges from a minimum of 9 mm for the most compact models to 41 mm for coupling halves designed for higher power transmission requirements.
| Specification | Value |
|---|---|
| Construction Material (Standard) | Heat-treated UNI 16CrNi4/Pb steel |
| Construction Material (Special Versions) | Quenched and tempered UNI 38NiCrMo4/Pb steel |
| Heat Treatment (Special Versions) | Nitriding (Tenifer) |
| Mechanical Strength | R = 95 – 105 kg/mm² |
| Spline Profile | DIN 5482 B (from 20×17 to 48×44) |
| Number of Teeth | 12, 14, 17, 18, 20, 23 |
| Supported Pump Types | 0.5 – 9.5 Turolla – 1 – 2 – 3 |
| Product Code | Pump Type | Pump Group | DIN 5482 B Profile | Number of Teeth | A (mm) | B (mm) | C (mm) | D (mm) | L (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 10027 | 0.5 | 1/0.5 | 20×17 | 12 | 6 | 19.5 | 4 | 2 | 9 |
| 10028 | 9.5 Turolla | 1/0.6 | 20×17 | 12 | 7 | 19.5 | 4.6 | 2 | 9 |
| 10029 | 1 | 1 | 20×17 | 12 | 12 | 19.5 | 7.6 | 3 | 13.5 |
| 10030 | 0.5 | 2/0.5 | 25×22 | 14 | 6 | 24.5 | 4 | 2 | 9 |
| 10031 | 0.5 | 2/0.6 | 25×22 | 14 | 7 | 24.5 | 4.6 | 2 | 9 |
| 10032 | 1 | 2/1 | 25×22 | 14 | 12 | 24.5 | 7.6 | 3 | 13.5 |
| 10034 | 2 | 2 | 25×22 | 14 | 15 | 24.5 | 8.4 | 4 | 31 |
| 10037 | 1 | 2.5/1 | 32×28 | 17 | 12 | 31.5 | 7.6 | 3 | 13.5 |
| 10041 | 3 | 2.5/3 | 32×28 | 17 | 20 | 31.5 | 11.8 | 5 | 41 |
| 10042 | 1 | 3/1 | 35×31 | 18 | 12 | 34.5 | 7.6 | 3 | 13.5 |
| 10045 | 2 | 3/2 | 35×31 | 18 | 15 | 34.5 | 9.2 | 4 | 31 |
| 10047 | 3 | 3 | 35×31 | 18 | 20 | 34.5 | 11.8 | 5 | 41 |
| 10048 | 1 | 3.5/1 | 40×36 | 20 | 12 | 39.5 | 7.6 | 3 | 13.5 |
| 10053 | 1 | 4/1 | 48×44 | 23 | 12 | 47.5 | 7.6 | 3 | 13.5 |