Overview
The Browning BK47X1 is a fixed-pitch, single-groove sheave designed for fractional horsepower (FHP) applications. This Browning BK47X1 sheave delivers the precision engineering and reliable performance manufacturers expect from Browning’s belt-drive portfolio. With a 1″ finished bore and 4.45″ pitch diameter, it fits directly into existing power transmission systems and delivers years of trouble-free operation.
Key Features
- Static Balancing: All sheaves are statically balanced to eliminate vibration and ensure smooth operation.
- Cast Iron Construction: Close-grain cast iron allows precision machining to tight tolerances, reducing belt slip and improving power transfer efficiency.
- A/B Combination Groove: Compatible with A, B, 4L, and 5L V-belts for flexible drive configuration options.
- Finished Bore Design: 1″ finished bore requires no additional boring or adapters on standard motor shafts.
- Proven Durability: Thousands deployed across warehouses, manufacturing, and material handling equipment worldwide.
Technical Specifications
- Model: BK47X1
- Bore Diameter: 1″ finished
- Pitch Diameter (O.D.): 4.45″
- Number of Grooves: 1
- Belt Type: A/B (also runs 4L, 5L)
- Material: Close-grain cast iron
- Balancing: Statically balanced
- Keyway: Standard for 1″ bore
- Bore Finish: Precision finished
Typical Applications
- Fractional horsepower motor drives (fans, blowers, pumps, compressors)
- Industrial machinery and equipment (mills, lathes, conveyors)
- HVAC systems and ventilation units
- Material handling and warehouse equipment
- Agricultural machinery and implements
- OEM assembly and maintenance replacement
Compatibility & Replacements
Compatible With
- Standard electric motors with 1″ shaft diameter
- A-section V-belts (most common in FHP drives)
- B-section V-belts for higher-horsepower fractional applications
- 4L and 5L belt sections
- Browning-compatible belt-driven equipment
Replaces / Drop-In Replacement For
The BK47X1 directly replaces other Browning BK47 variants designed for 1″ finished bores. Verify bore diameter and pitch diameter match your drive system before ordering. Do not substitute bore sizes without confirming compatibility with your system integrator.
Works With
- Standard industrial V-belt drives
- Browning BK series sheave lines
- Motor mounting brackets and bearing housings compatible with 4.45″ pitch diameter pulleys
- Existing belt-drive conveyors, fans, and pump systems using A/B belts
