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PRO-LH

Limited-Duty Belt Drive Jackshaft Emergency Chain Hoist

The PRO-LH Commercial Jackshaft Operator is designed for commercial sectional doors with high-lift or vertical-lift track configurations, as well as small rolling doors and security grilles requiring up to 15 cycles per hour.

Featuring a heavy-duty belt drive system, adjustable friction clutch, and standard solenoid brake, the PRO-LH delivers reliable performance for moderate-use commercial applications. An integrated emergency chain hoist allows manual operation when required.

Download Spec Sheet

    • High Starting Torque Motor: ½ HP motor with automatic thermal overload protection for reliable commercial operation.

    • Heavy-Duty Belt Drive: Durable 4L V-belt drive system designed for dependable performance.

    • Emergency Chain Hoist: Manual operation with an electrical cut-out switch for added safety.

    • Standard Solenoid Brake: Integrated braking system for controlled door operation.

    • Adjustable Friction Clutch: Provides adjustable slip protection within the drive system.

    • Durable Bearing System: Permanently lubricated and sealed ball bearings for reliable operation.

    • Flexible Mounting: Available in left- or right-hand configurations, specified at the time of order.

    • Adjustable Limit Settings: Rotary limit switch assembly with low-friction cam nuts for precise door positioning.

    • Built-In Radio Receiver: Onboard receiver with antenna and external radio control connections.

    • Three-button open/close/stop control station (NEMA 1)

    • 24V Class 2 control circuit with 40VA transformer

    • ½ HP motor with automatic thermal overload protection

    • Heavy-duty 4L V-belt drive

    • #41 roller chain and sprockets on internal and final drives

    • ¾" permanently lubricated and sealed ball bearings on pulley shaft

    • 1" permanently lubricated and sealed ball bearings on final drive shaft

    • Emergency chain hoist with chain keeper

    • N-1 photocells included for doors up to 24 ft wide

    • Durable dark grey baked-on finish

    • Duty Cycle: Limited Duty, Maximum 15 Cycles per Hour

    • Motor: ½ HP High Starting Torque

    • Drive System: Heavy-Duty 4L V-Belt

    • Brake: Solenoid Brake (Standard)

    • Manual Operation: Emergency Chain Hoist

    • Mounting: Left or Right (Specify When Ordering)

    • Control Circuit: 24V Class 2 with 40VA Transformer

    • Control Station: Three-Button Open/Close/Stop (NEMA 1)

    • Shipping Weight: 70 lbs

    • Warranty: 4 Years or 50,000 Cycles, Whichever Comes First

  • Suitable for a variety of commercial and industrial door systems, including:

    • Commercial sectional overhead doors

    • High-lift and vertical-lift sectional doors

    • Small rolling steel doors

    • Commercial security grilles

 

Jackshaft Operators