The Multiquip 337009400 Needle Bearing 30X37X12 is a genuine OEM component designed for MQD2HA and MQD3HA diaphragm pumps. As a factory-sourced part, 337009400 meets the exact dimensional and load tolerances specified for these pumps, ensuring correct shaft support and smooth rotational movement within the pump mechanism. This bearing is confirmed to fit Multiquip Diaphragm Pump models MQD2HA and MQD3HA, making it a direct, no-guesswork replacement when servicing these units. Sourcing the correct OEM bearing is critical — an improperly sized needle bearing can accelerate wear on the shaft journal and lead to premature pump failure.
Key Features
- Precision Needle Tolerancing — OEM-spec 30x37x12mm dimensions ensure correct radial load distribution and shaft alignment within the pump drive assembly.
- Genuine Multiquip OEM Part — Sourced directly from Multiquip, this bearing matches the original component specification for consistent, repeatable performance.
- Direct Fitment for MQD2HA and MQD3HA — Confirmed compatibility with Multiquip Diaphragm Pump models MQD2HA and MQD3HA for straightforward installation.
- Supports Consistent Pump Output — A properly functioning needle bearing maintains correct shaft positioning, which directly affects diaphragm stroke consistency and pumping efficiency.
- Protects Adjacent Components — Replacing a worn bearing at the correct service interval prevents secondary damage to the shaft, housing bore, and surrounding drive components.
A needle bearing provides radial support to a rotating shaft by using small-diameter cylindrical rollers arranged around the shaft journal. In a diaphragm pump, the bearing supports the eccentric drive shaft that creates the reciprocating motion needed to flex the diaphragm and move fluid. When a needle bearing wears or fails, shaft play increases, leading to uneven diaphragm stroke, reduced flow output, and accelerated wear on the pump housing and drive components.
Part Details
| Part Number | 337009400 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Needle Bearing 30X37X12 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2HA |
| Diaphragm Pumps | MQD3HA |
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.
