BSM No. 4 Brown & Sharpe 713-4-1 Rotary Gear Pump | Made in USA

BSM No. 4 Rotary Gear Pump

The BSM No. 4 (713-4-1) is an external rotary gear pump that is built to last in tough industrial settings. This pump has gears that are precision-ground and a strong cast-iron body. It gives a steady, pulseless flow of thick liquids. The BSM No. 4 has the mechanical strength needed to keep things running smoothly, whether you’re moving fuel oil or circulating coolant.

Technical Specifications

Industrial Applications

• Chemical Processing
• Power Generation
• Marine Engineering
• Machine Tools

Engineer’s Maintenance Guide:

Follow these engineering best practices to get the most use out of your BSM 713-4-1:

1. Check Alignment: Make sure that the motor shaft and pump shaft are perfectly lined up. Misalignment is the main reason why seals fail early and bearings wear out.
2. First, never let the pump run dry. A “dry start” can still score the gear faces, even though it is self-priming. Before the first start, always wet the gears with the process fluid.
3. Packing Adjustment: If your model uses compression packing, let a small drip (about 10 drops per minute) cool and lubricate the shaft. Don’t tighten too much.
4. For suction filtration, always put a strainer (60–100 mesh) on the suction side to keep metal shavings and other debris from getting into the gear chamber.
5. Check every so often for changes in noise or vibration. When the “whine” gets louder, it usually means that air or cavitation is getting into the suction line.