Graco 166055 Shaft Bearing
$65.00
In Stock
The Graco 166055 Shaft Bearing ensures smooth and precise shaft alignment within Bulldog 5:1 pump assemblies. It minimizes wear, vibration, and extends pump life.
- OEM-grade replacement for 5:1 Bulldog pumps
- Used in models 206418, 207321, and 206796
- Supports shaft and packing alignment for efficient performance
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Quick Compatibility & Details
Compatible Machines
- Graco 5:1 Bulldog Pump — Model 206418 (Rubber-Packed)
- Graco 5:1 Bulldog Pump — Model 207321 (Rubber-Packed)
- Graco 5:1 Bulldog Pump — Model 206796 (PTFE-Packed)
Product Overview
Graco 166055 Bearing, Shaft is an OEM internal bearing used in selected Bulldog displacement pump assemblies to support and guide the pump shaft for smoother operation, reduced wear, and proper alignment.
Key Features
- OEM-grade fit and performance for the Bulldog 5:1 series listed above.
- Supports shaft alignment to minimize vibration and premature seal wear.
- Used in lower/displacement pump assemblies; reference your pump’s parts diagram before ordering.
Specifications
| Part Number | 166055 |
| Description | Bearing, Shaft (displacement/lower pump component) |
| Typical Material | PTFE-type bearing used in Bulldog pump assemblies |
| Associated Repair Kits | Included in Bulldog repair kits depending on packings (e.g., 206931 for rubber-packed, 207349 for PTFE-packed) |
| Used With | 5:1 Bulldog displacement pump models 206418, 207321, 206796 |
Fitment Guidance
- Match your exact pump model and serial with the service manual/exploded diagram.
- If your Bulldog pump parts list references 166055, this is the correct replacement.
- For other Graco pumps, confirm via the official parts lookup before purchase.
Installation Notes
- Depressurize system fully and follow safety procedures in the service manual.
- Inspect the shaft and housing for scoring or play; replace worn components.
- Install bearing squarely; verify correct orientation where applicable.
- Reassemble and test for smooth cycling and leaks.
Frequently Asked Questions
It supports the displacement rod/shaft inside the Bulldog lower, keeping it aligned to reduce friction and wear on packings and seals.
Check your pump’s parts manual for the exact model. If the parts list calls out 166055, it is the correct bearing for that assembly.
Yes, the bearing is supplied within specific Bulldog repair kits depending on packing type (rubber-packed vs PTFE-packed). Refer to your kit contents.
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