Multiquip 337012200 Input Pinion Ball Bearing Keyed

The Multiquip 337012200 Input Pinion Ball Bearing Keyed is a genuine OEM component designed for MQD2HA and MQD3HA diaphragm pumps. As a factory-sourced replacement, it meets the exact tolerancing and load specifications required to maintain proper drivetrain function in the pump's input pinion assembly. Sourced directly through Multiquip's OEM parts network, 337012200 is the correct part to specify when servicing these diaphragm pump models.

Key Features

• Precision-Tolerance OEM Bearing: — Manufactured to the exact radial and axial load specifications of the original input pinion bearing, ensuring correct fit within the pinion shaft assembly without dimensional variance.
• Keyed Shaft Interface: — The keyed design locks the bearing to the input pinion shaft, preventing rotational slippage and maintaining positive torque transfer through the drivetrain.
• Direct-Fit for MQD2HA and MQD3HA: — Confirmed fitment for Multiquip MQD2HA and MQD3HA diaphragm pumps; drop-in replacement using the same mounting geometry as the original component.
• Drivetrain Integrity: — A correctly functioning input pinion bearing keeps the pump's mechanical drive smooth and consistent; a worn bearing introduces play into the pinion shaft, accelerating wear on surrounding drivetrain components.
• Genuine Multiquip OEM Part: — Supplied under the original Multiquip part number 337012200, so you can verify the correct component before ordering and maintain accurate service records.

The input pinion ball bearing supports the input pinion shaft within the pump's gear or drive assembly, allowing it to rotate smoothly while handling the radial and thrust loads generated during pump operation. The keyed interface ensures the bearing and shaft move as a single unit, which is critical for consistent torque delivery to the pumping mechanism. When this bearing wears or fails, increased shaft play and vibration follow, leading to accelerated damage to adjacent gears and seals and eventual loss of pump output.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.