Oberdorfer 4AD56 Close Coupled Adaptor Kit — Genuine OEM Motor Mounting Solution for Gear Pumps
The Oberdorfer 4AD56 Close Coupled Adaptor Kit is the factory-correct solution for mounting compatible Oberdorfer gear pump ends directly to a NEMA-frame electric motor in a close-coupled configuration. Designed to eliminate shaft misalignment and reduce vibration, this kit gives you a clean, compact pump-and-motor assembly without the need for additional baseplate hardware or shaft couplings. Whether you're setting up a new pump installation or replacing a worn adapter on an existing system, the 4AD56 delivers the kind of precise, repeatable fit you'd expect from a genuine Oberdorfer part.
What makes this kit particularly practical is how much installation time it saves. Rather than fabricating or sourcing aftermarket brackets that may not hold tolerance under load, the 4AD56 is engineered specifically for Oberdorfer gear pumps, ensuring correct alignment from the first bolt down. It's the kind of part that experienced maintenance technicians reach for when uptime matters — because a properly close-coupled pump runs quieter, lasts longer, and requires less routine attention than a poorly fitted assembly.
Key Features
- Genuine Oberdorfer OEM close coupled adaptor kit
- Designed for direct motor-to-pump mounting in a close-coupled configuration
- Eliminates need for external couplings and separate mounting bases
- Ensures precise shaft alignment between pump end and motor
- Compatible with NEMA-frame motor mounting standards
- Reduces vibration and mechanical stress on pump internals
- Durable construction suited for continuous industrial service
- Part Number: 4AD56
Applications
- Mounting Oberdorfer rotary gear pump ends to NEMA-frame electric motors
- Industrial fluid transfer systems requiring compact pump-motor assemblies
- Replacement of worn or damaged close-coupled adapter hardware
- OEM and aftermarket pump rebuild and reassembly
- Industrial, commercial, and process equipment pump installations
- Systems where footprint minimization is a priority
Specifications
- Part Number: 4AD56
- Kit Type: Close Coupled Adaptor Kit
- Manufacturer: Oberdorfer Pumps (a subsidiary of Thomas Industries)
- Motor Frame Compatibility: NEMA standard frame (56C and related frames)
- Configuration: Close coupled (direct motor mount)
- Material: Industrial-grade construction consistent with Oberdorfer gear pump line
- Compatible Pump Series: Oberdorfer rotary gear pumps (refer to your pump model documentation to confirm 4AD56 fitment)
- Kit Contents: Adapter bracket and associated hardware for close coupled motor mounting
Frequently Asked Questions
Q: What is the Oberdorfer 4AD56 Close Coupled Adaptor Kit used for?
It is used to mount an Oberdorfer gear pump end directly to a NEMA-frame electric motor in a close-coupled arrangement, creating a compact, aligned pump-motor assembly without the need for a separate baseplate or flexible shaft coupling.
Q: How do I know if the 4AD56 is the right adapter kit for my pump?
You should cross-reference the 4AD56 part number with your Oberdorfer pump's parts list or exploded view diagram. Oberdorfer publishes model-specific parts documentation that will confirm whether this adapter kit is the correct fit for your pump series.
Q: Is the 4AD56 an OEM Oberdorfer part or an aftermarket replacement?
The 4AD56 is a genuine Oberdorfer part number, manufactured to OEM specifications. Using genuine parts ensures correct fitment, maintains warranty compliance, and delivers the performance tolerances the pump was designed around.
Q: Can this kit be used with any NEMA-frame motor, or only specific frame sizes?
Oberdorfer close coupled adapter kits are designed for specific NEMA motor frame configurations. The 4AD56 is compatible with applicable NEMA-standard frames used with Oberdorfer gear pumps. Always verify your motor's NEMA frame designation against the kit's compatibility before ordering.
Q: Is there a difference between the 4AD56 and the 4AD45T adaptor kits?
Yes. While both are Oberdorfer close coupled adaptor kits listed at the same price point, they carry different part numbers and are designed to fit different pump models or motor frame configurations. Confirm which part number applies to your specific pump by consulting your pump's parts list.
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