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Catalogue substitution sheet
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NTN BT1B 639405/Q

Tapered · Open

The seat — 28 MM × 68 MM × 50 MM

Bore
28 MM
Outside dia
68 MM
Width
50 MM
Type
Tapered
Seal
Open
Clearance
CN (Normal)
Precision
P0 (Class4)
Dynamic C
42.9 kN
Static C0
40.0 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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