Description
Rotary FC5843-3 Bearing Washer / Sheave Spacer for Rotary 4-Post Lifts
This anti-friction plastic spacer is positioned between sheave components and their mounting surfaces in the sheave assemblies of Rotary 4-post lifts. It reduces wear and ensures smooth sheave rotation by minimizing metal-to-metal contact. Typically located under the runway and cross rail beams, this washer should be replaced when sheave movement becomes rough or noisy, or when visible wear or cracking is observed on the washer itself.
Product Information
- Brand / Equipment: Rotary (Rotary Lift)
- Manufacturer / Reference PN: FC5843-3
- Store SKU: roy8433
- Component: Bearing Washer / Sheave Spacer (anti-friction plastic washer)
- Key Specs: Approx. 3″ outer diameter, 1.5″ inner diameter, 1/8″ thickness
- Location: Sheave assemblies under runway and cross rail beams
- Listed Application: SM123, ARO123, AR123, SMO123, ARO123S, SMO123S, ARO123L, SMO123L, ARO123-EL2, SMO123-EL2, ARO123-EL3, SMO123-EL3, ARO123L-EL2, SMO123L-EL2, ARO123L-EL3, SMO123L-EL3
Compatible Makes / Verified Fitment Models
The following models are confirmed at third-party parts supplier listings as compatible with part number FC5843-3 / :
- Rotary SM123 (and variants: ARO123, AR123, SMO123)
- Rotary SM101-100, SM101-101, SM101-102, SM101-103, SM101-104
- Rotary SM123-52
- Rotary AR123-10, AR123-20
- Rotary ARO12N-002, SMO12I370, SMO12N-002
Note: Always verify your specific model number and current parts diagram before ordering. Additional model compatibility (including AR12, SM12, AM40-43, AR55-XX, SM55-XX series) has not been independently confirmed for this specific part number and is flagged for human review.
Replacement / Cross-Reference Numbers
- Rotary OEM Part Number: FC5843-3
- Included in Rotary sheave kits: FC5516, FC5517, FC5519
Fitment and Ordering Notes
Verify your Rotary 4-post lift model number before ordering. Confirm the washer dimensions (3″ OD x 1.5″ ID x 1/8″ thick) match your application. If your model is not listed above, contact us before ordering to confirm compatibility.

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