Bearings 20 × 37 × 17 mm
2 items fitting a seat with 20 mm bore, 37 mm outside diameter and 17 mm width. All genuine FAG and INA, with manufacturer technical data.
This seat holds 2 items, all of the same type: needle roller bearing. One ships within 24 h, the rest are brought in to order.
How items of the same size differ
One seat size comes in several designs. The suffix tells them apart: 2Z means shields on both sides, 2RSR contact seals, C3 a clearance greater than normal (for higher operating temperatures); no clearance suffix means normal CN. For dirty environments choose contact seals, for high speed a shield.
How to measure a bearing
The bore d takes the shaft, the outside diameter D sits in the housing, B is the ring width. Measure with a caliper on a cold, cleaned bearing; catalogue sizes are whole millimetres or halves, so a reading of 24.97 mm means 25 mm.
Common questions about this size
- Which bearing has dimensions 20 × 37 × 17 mm?
- 2 items in our catalogue fit this seat — among them NA4904-XL-C3 and NA4904-XL. The base number is shared across manufacturers; only the suffixes describing the design differ.
- Which of them are in stock?
- Shipping within 24 h from stock: NA4904-XL. The rest are brought in to order — the delivery date is on each item's page.