17 × 30 × 7 mm bearing & seal
6903 2RS · 6903 ZZ · 17X30X7 — 8 products, 5 brands
5 products in size 17 × 30 × 7 mm are in stock
Choose a brand and request a quote. Products of the same size are interchangeable; check the shield / seal type.
6903 2RS
Thin section deep groove ball bearing · Rubber seals both sides (2RS)
Designation by brand: SKF 6903-2RS1 FAG 6903-2RSR NSK 6903DDU NTN 6903LLU KOYO 6903-2RS
6903 2RS KWC RULMAN
6903 ZZ
Thin section deep groove ball bearing · Metal shields both sides (ZZ / 2Z)
Designation by brand: SKF 6903-2Z FAG 6903-2Z NSK 6903ZZ NTN 6903ZZ KOYO 6903ZZ
17X30X7
Oil seals
Other designations: DIN 3760 17x30x7 NBR Malzeme NBR
Same diameters, different width
Other sizes with 17 mm inner diameter
What does size 17x30x7 mean?
- 17 mm inner diameter (shaft), 30 mm outer diameter (housing), 7 mm width. Dimensions are brand-independent; measure the inner diameter, outer diameter and width with a caliper to verify your part.
- Bearings of the same size are interchangeable, but the shield / seal type (open, ZZ, 2RS), internal clearance (C3) and bearing type (ball / roller) must suit the application.
- For seals, material (NBR, Viton/FKM) and lip type (single / double lip, dust lip) matter as well as size; choose by temperature and lubricant.
- If you are not sure, send us a photo of the part or the code on it; we will find the right product and price.




