Product Description
SY48187 is a reinforced nitrile rubber radial oil seal for electric lift truck hydraulic systems, featuring an integrated steel skeleton and precision ground sealing lip. The part is interchangeable with multiple forklift seal numbers and supports rotary shaft applications in hydraulic pumps and transmissions up to 100 PSI and 3600 RPM.
Specifications
Dimensional
| Installation Clearance | Requires minimum shaft-to-bore clearance of 0.010 inch |
Material
| Surface Finish | Precision ground lip with anti-friction coating |
| Material Specification | NBR (nitrile butadiene rubber) per ASTM D2000 |
Part Numbers
| Cross-Reference Part Numbers | SE-291, RA 530638, NI 43252-J2000, NI 12289-14600, CR 78499, CR 064211-002, BA 001383, 5800259-16, 5800073-66, 1400-9137, 00591-63291-81, 00591-41260-81, 00591-07373-81 |
| Equivalent Part Numbers | YL 720004903, YL 505965509, PR P-11039-14 |
| OEM Part Number | SY48187 |
Frequently Asked Questions
Q: What are the specifications and material of the SY48187 seal?
A: The SY48187 is a reinforced nitrile rubber radial oil seal with an integrated steel skeleton and precision ground sealing lip. It is rated for rotary shaft applications in hydraulic systems operating up to 100 PSI and 3600 RPM.
Q: Which electric lift truck models are compatible with the SY48187?
A: The SY48187 is compatible with hydraulic pump and transmission sealing applications on electric lift trucks from Crown, Toyota, Raymond, Yale, Hyster, and other major OEM brands. It is interchangeable with multiple OEM seal numbers across different manufacturers.
Q: What are the cross-reference part numbers for the SY48187?
A: The SY48187 is equivalent to SE-291, RA 530638, NI 43252-J2000, NI 12289-14600, CR 78499, CR 064211-002, BA 001383, 5800259-16, 5800073-66, 1400-9137, and several other OEM numbers. Equivalent parts include YL 720004903, YL 505965509, and PR P-11039-14.
Q: What is the pressure and RPM rating of the SY48187 seal?
A: The SY48187 is rated for hydraulic systems up to 100 PSI system pressure and rotational speeds up to 3600 RPM. These ratings apply to standard operating conditions in hydraulic pump and transmission applications.
Q: How long does the SY48187 seal typically last?
A: Seal lifespan depends on operating pressure, temperature, fluid type, and shaft surface condition. In typical electric lift truck hydraulic systems, seals last two to five years. Failure symptoms include hydraulic fluid leakage from the pump or transmission, loss of system pressure, and reduced lifting performance.