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Catalogue substitution sheet
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NTN W 63801-2RS1

Deep groove ball · 2RS contact seal

The seat — 12 MM × 21 MM × 7 MM

Bore
12 MM
Outside dia
21 MM
Width
7 MM
Type
Deep groove ball
Seal
2RS contact seal
Clearance
CN (Normal)
Precision
ABEC-1 (P0)
Dynamic C
1.5 kN
Static C0
0.9 kN

No other designation in the catalogue shares this bore × outside diameter × width. There is nothing to compare, and nothing here guesses at a near neighbour: a bearing one millimetre off this seat is a different seat.

What this sheet is — and what the catalogue did not say

Anyone with this link can view this part and its recorded candidate comparison.

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