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CAT Pump - Pump Ends and Mounts

Cat Pumps Pump Ends & Mounts

Pump ends (bare-shaft pumps), drive conversions, and pump-to-motor mount hardware for every Cat Pumps frame. If you are building or repairing a custom Cat Pumps package — belt-drive with sheaves, direct-drive with hollow or solid shaft, electric-motor adapter, or gas-engine coupling — ForeverPure supplies the complete range of Cat factory pump ends and mounting hardware.

What's in this catalog

Frequently Asked Questions

What is a "bare-shaft pump end"?

A bare-shaft pump end is the Cat pump without a motor, ready for OEM integration. You select the motor (electric, gas, hydraulic) and coupling separately. Bare-shaft pumps are sold by frame class and displacement; confirm shaft dimensions and rotation direction against your motor before ordering.

How do I convert a belt-drive Cat pump to direct-drive?

Direct-drive conversion typically requires (a) a direct-drive replacement pump end with a hollow shaft matched to your motor's C-face shaft, or (b) a solid-shaft adapter with a flexible coupling and bell housing. Share your motor frame size and Cat pump model with ForeverPure for a conversion kit recommendation.

What motor size do I need for a Cat Pumps direct-drive pump?

Motor sizing depends on flow, pressure, and mechanical efficiency. Use Cat Pumps' standard formula: HP = (GPM × PSI) / 1460 (about 85% efficient). For a 5 GPM × 3000 PSI pump: 5 × 3000 / 1460 ≈ 10.3 HP — size to the next standard motor up (15 HP). ForeverPure can recommend the motor + pump pairing.

Do you supply complete pump-and-motor packages?

Yes — complete packages with Cat pump end, NEMA electric motor, baseplate, flexible coupling, and guard are available on request. Share your application details (flow, pressure, voltage, phase, service factor) for a complete package quote.

Can I rebuild a used Cat pump end and reinstall it?

Yes — Cat Pumps publishes detailed service manuals, and complete rebuild kits (seals, valves, v-packings) are available for every frame. ForeverPure can supply the rebuild kit and the service manual — rebuilding is straightforward with standard shop tools and is often the most economical path for lightly-worn pumps.

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