OPTIBELT SPB 3550 Ld red power 3

Optibelt RED POWER 3 Banded V-Belt – 3-SPB 3550 Ld

Description

This Optibelt RED POWER 3 Kraftband is a high-performance, maintenance-free banded V-belt, model 3-SPB 3550 Ld. It is engineered for demanding industrial applications requiring high power transmission and stability. The joined construction of three SPB profile belts prevents belt whip and turnover, ensuring smooth and reliable operation. Its antistatic properties (ISO 1813) make it suitable for use in sensitive environments.

Specifications

• Manufacturer: Optibelt
• Series: RED POWER 3
• Product Type: KB Kraftband (Banded V-Belt)
• Model: 3-SPB 3550 Ld
• Number of Ribs: 3
• Profile: SPB
• Datum Length (Ld): 3550 mm
• Top Width (per rib): 16.3 mm
• Height: 13.0 mm

Label Info

• Antistatic according to ISO 1813
• Maintenance-free

Application

Ideal for heavy-duty drives in machinery such as pumps, fans, compressors, and agricultural equipment where single belts may vibrate or jump out of the pulley grooves.

Country of Origin

Made in Germany.

CO2 Impact

Choosing this pre-owned V-belt saves approximately 16.0 kg of CO2 compared to a new one. This is comparable to the CO2 emissions from a 80 km car journey, making it a sustainable choice for your operations.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What does ‘Ld’ signify in the ‘SPB 3550 Ld’ measurement?

Ld stands for ‘Datum Length’ (or ‘Richtlaenge’ in German). It is a standardized effective length measurement for V-belts used for calculating drive center distances and is measured at the pitch line of the belt profile.

Is the RED POWER 3 series compatible with standard SPB pulleys?

Yes, the Optibelt RED POWER 3 belts with an SPB profile are designed to fit perfectly in standard SPB profile V-groove pulleys according to DIN 2211 / ISO 4183. No special pulleys are required.

What are the advantages of a banded (Kraftband) V-belt over multiple single V-belts?

A banded V-belt, like this Kraftband, consists of multiple V-belts joined by a reinforced tie-band. This construction prevents individual belts from twisting, flipping over, or jumping out of the pulley grooves, which is a common issue in drives with high shock loads or vibrations. It ensures a more uniform load distribution and increased stability.

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Last Update: Friday, March 13, 2026