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Borelli 10 daNm Electromagnetic Clutch – 30901-1/7 / 30903-1/7 Series
The Borelli 10 daNm Electromagnetic Clutch – 30901-1/7 / 30903-1/7 Series is designed to ensure precise mechanical power transmission in hydraulic applications. This fully reversible unit features a 7 PLV groove pulley and a DIN 5482 spline profile, delivering a static torque of 12.5 daNm and supporting speeds of up to 5000 rpm. Available in 12 V DC and 24 V DC versions, it ensures fast engagement times (25 ms).
The available product codes are: 30901-1/7, 30903-1/7, 30917-1, 30919-1, 30909-1, 30911-1, 30925-1, 30927-1, 30901-1/SA, 30903-1/SA, 30901-1/SB, 30903-1/SB.
Borelli 10 daNm Electromagnetic Clutch – 30901-1/7 / 30903-1/7 Series
The Borelli 10 daNm Electromagnetic Clutch – 30901-1/7 / 30903-1/7 Series is a high-precision component designed to control power transmission in hydraulic circuits and applications. This electromechanical unit features fully reversible operation and incorporates a 7 PLV groove pulley (152 mm diameter) combined with a DIN 5482 35×31 spline profile.
The internal structure ensures high reliability through the use of SKF 6009 2RS bearings, providing smooth rotation and resistance to radial loads. The sealing system consists of high-quality seals (35x50x7 and 45x60x7), which protect the internal mechanisms from external contamination and retain lubrication. The main assembly includes a robust transmission shaft (A30901) and a specially shaped housing (30009.1), secured by retaining rings (d.45).
From a mechanical perspective, the series delivers a nominal torque of 7.8 daNm, with a peak static torque of 12.5 daNm. Dynamic performance varies according to rotational speed: at 500 rpm, dynamic torque reaches 8.5 daNm, gradually decreasing to 7.0 daNm (1000 rpm), 4.2 daNm (1500 rpm), 3.5 daNm (2000 rpm), 2.7 daNm (2500 rpm), and finally 2.5 daNm at 3000 rpm.
The system supports a maximum rotational speed of 5000 rpm. Its actuation mechanism is extremely responsive, with an engagement time of 25 ms and a disengagement time of 40 ms. A minimum interval of 20 seconds between consecutive engagements is recommended to preserve the integrity of the electromagnetic and mechanical components. The total unit weight is 5.5 kg.
The range is divided into two main power supply configurations: the 30901-1/7 Series operating at 12 V DC and the 30903-1/7 Series operating at 24 V DC. Power is supplied through a dedicated 2×2.5 electrical cable.
At a reference operating temperature of 20°C, the 12 V DC version has a resistance of 4.00 Ω, drawing 3.33 A with a total power consumption of 40.00 W. Under the same conditions, the 24 V DC model has a resistance of 20.00 Ω, drawing 1.26 A with a power consumption of 30.30 W. An increase in operating temperature to 120°C results in a natural 20% reduction in performance, with corresponding changes in resistance, current and power consumption.
The versatility of the Borelli electromagnetic clutch is ensured by the wide range of available flange configurations, allowing direct coupling with different types of hydraulic pumps. In addition to the standard flange for Group 1-2 pumps, specific configurations are available for Group 2 BOSCH, standard Group 3, Group 3 BOSCH, and SAE A and SAE B industrial standards. This makes the product ideal for integration into agricultural machinery, industrial vehicles and complex hydraulic systems where selective power take-off control is required.
| Specification | Value |
|---|---|
| Nominal Torque | 7.8 daNm |
| Static Torque | 12.5 daNm |
| Dynamic Torque (500 rpm – 3000 rpm) | 8.5 daNm – 2.5 daNm |
| Maximum Speed | 5000 rpm |
| Engagement Time | 25 m/sec |
| Disengagement Time | 40 m/sec |
| Minimum Interval Between Engagements | 20 sec |
| Total Weight | 5.5 Kg |
| Pulley Type and Spline Profile | 7 PLV Groove / DIN 5482 35×31 |
| Power Consumption at 20°C (12V / 24V) | 40.00 W / 30.30 W |
| Flange Configuration | Product Code (12 Volt) | Product Code (24 Volt) |
|---|---|---|
| Standard 7 PLV Pulley | 30901-1/7 | 30903-1/7 |
| Group 2 BOSCH | 30917-1 | 30919-1 |
| Group 3 | 30909-1 | 30911-1 |
| Group 3 BOSCH | 30925-1 | 30927-1 |
| SAE A | 30901-1/SA | 30903-1/SA |
| SAE B | 30901-1/SB | 30903-1/SB |