Product Description
5203-ZZ is a metric double row angular contact ball bearing, double shielded, with inner diameter 17 mm, outer diameter 40 mm, and total width 17.5 mm. The bearing is constructed from through-hardened steel and is compatible with applications requiring both radial and moderate axial loads. Typical cross-references include NTN 5203ZZ, NSK 5203ZZ, KOYO 5203ZZ, MRC 5203-SBKFF, FAG 3203B.2ZR, and SKF 5203A-2Z.
Specifications
Material
| Ball Material | Chrome steel (SAE 52100 equivalent) |
Part Numbers
| OEM Part Number | 5203-ZZ |
| Manufacturer Part Numbers | NTN 5203ZZ; NSK 5203ZZ; KOYO 5203ZZ; MRC 5203-SBKFF; FAG 3203B.2ZR; SKF 5203A-2Z |
| Cross-Reference Part Numbers | FAG 3203B.2ZR; MRC 5203-SBKFF; SKF 5203A-2Z |
| Supersedes | Supersedes legacy part numbers 5203, 5203Z |
Frequently Asked Questions
Q: What are the specifications of bearing BS 5203 ZZ?
A: BS 5203 ZZ is a metric double row angular contact ball bearing, double shielded. Inner diameter is 17mm, outer diameter is 40mm, and total width is 17.5mm. The bearing is constructed from through-hardened steel and rated for both radial and moderate axial loads.
Q: What does the ZZ designation mean on bearing BS 5203 ZZ?
A: The ZZ designation indicates the bearing is double shielded. Both sides of the bearing are sealed with metal shields that protect internal rolling elements from contamination while allowing normal operation. Shields cannot be removed.
Q: Which pallet jacks use bearing BS 5203 ZZ?
A: BS 5203 ZZ fits electric and manual pallet jacks from Crown, Toyota, Raymond, Yale, Hyster, Jungheinrich, and similar manufacturers. The double row angular contact design supports combined radial and axial loads common in steering and drive wheel applications.
Q: What are the cross-reference part numbers for BS 5203 ZZ?
A: BS 5203 ZZ has equivalent part numbers from major bearing manufacturers: NTN 5203ZZ, NSK 5203ZZ, KOYO 5203ZZ, MRC 5203-SBKFF, FAG 3203B.2ZR, and SKF 5203A-2Z. These are direct interchangeable replacements with identical specifications.
Q: What is the load capacity and typical lifespan of bearing BS 5203 ZZ?
A: BS 5203 ZZ is rated to handle both radial and moderate axial loads typical of pallet jack steering and drive wheel applications. In normal warehouse service with proper maintenance, expect 3 to 6 years of operation before replacement becomes necessary. Heavy-duty environments may require earlier replacement.
Q: Why is the double-shielded design important on bearing BS 5203 ZZ?
A: Double shielding protects the bearing from moisture, dust, and debris common in warehouse, cold storage, and outdoor environments. The sealed construction reduces maintenance requirements and extends bearing lifespan compared to open or single-shielded designs.