6218-ZZ
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What 6218-ZZ means
| Code | Position | Meaning |
|---|---|---|
6 |
Type | Deep groove ball bearing |
2 |
Diameter series | Diameter series 2 (light): fixes OD and width for the bore (ISO 15) |
18 |
Bore | Bore code 18 × 5 = 90 mm |
ZZ |
Closure | Metal shields, both sides |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
6218-ZZ specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 90 mm | 3.5433 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 160 mm | 6.2992 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 30 mm | 1.1811 in | ISO table for this designation, confirmed by supplier data |
| Bearing type | Deep groove ball bearing | Stated by the designation | |
| Seals / shields | Metal shields, both sides | Stated by the designation | |
| Internal clearance | Normal (CN): no clearance code in the designation | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
Equivalent to / interchanges with
| Brand | Part number | Basis |
|---|---|---|
| SKF | 6218 2Z | Brand suffix convention for this ISO size |
| TIMKEN | 6218 ZZ | Brand suffix convention for this ISO size |
| FAG | 6218 2ZR | Brand suffix convention for this ISO size |
| NSK | 6218 ZZ | Brand suffix convention for this ISO size |
| NTN | 6218 ZZ | Brand suffix convention for this ISO size |
| KOYO | 6218 ZZ | Brand suffix convention for this ISO size |
| NACHI | 6218 ZZE | Brand suffix convention for this ISO size |
Equivalents are dimensional and closure-for-closure: same bore, outside diameter, width, seals or shields and internal clearance. Bearing interchange tables
6218-ZZ is a deep groove ball bearing, 90 mm bore × 160 mm OD × 30 mm wide (3.5433 × 6.2992 × 1.1811 in). It has metal shields on both sides. Other makers sell the same size as SKF 6218 2Z, TIMKEN 6218 ZZ, FAG 6218 2ZR, NSK 6218 ZZ.
The 6218-ZZ is a deep groove ball bearing with metal shields on both sides, featuring a 90mm bore diameter, 160mm outside diameter, and 30mm width. The ZZ designation indicates dual metal shields that protect the bearing from contaminants while retaining lubrication.
