The SEW EURODRIVE EV21B Variable Pulley Drive is engineered for precise speed control in demanding industrial environments. This unit, identified by part number 1277855, is a component within the SEW EURODRIVE EV series, commonly integrated into machinery requiring adjustable output speeds without the need for complex electronic drives. Its design facilitates mechanical speed variation, making it suitable for applications where continuous adjustment is a primary operational requirement.

Technical details

• Series: EV21B
• Drive Type: Variable Pulley Drive
• Gear Ratio: 1:6 (nominal)
• Shaft Diameter: 28mm
• Mechanism: Mechanical speed adjustment via variable pulleys
• Power Transmission: Designed for belt-driven systems
• Construction: Robust industrial-grade housing for durability
• Operational Principle: Achieves speed variation by altering the effective diameter of the pulleys through mechanical adjustment.

Applications & compatibility

This SEW EURODRIVE variable pulley drive is frequently employed in applications such as packaging machinery, material handling systems, and textile manufacturing equipment where precise and easily adjustable output speeds are critical. Its mechanical nature ensures reliable operation in environments where electronic drive systems might be susceptible to interference or require more complex setup.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the SEW EURODRIVE 1277855 or contact our technical team for cross-reference assistance with compatible EV series components.