Needle Roller Bearings category illustration

Engineering reference only. Category illustration; verify the offered drawing, source designation and quotation before ordering.

Needle Roller Bearings · HK reference

HK1212 Drawn Cup Needle Roller Bearing

This HK reference has no inner ring. Fw denotes the roller-inscribed diameter, not an inner-ring bore; C denotes cup width, not radial bearing width B. Review the mating shaft and housing drawing.

Fw 12 mm · D 18 mm · C 12 mm

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Structure and designation

What this reference describes

This HK reference has no inner ring. Fw denotes the roller-inscribed diameter, not an inner-ring bore; C denotes cup width, not radial bearing width B. Review the mating shaft and housing drawing.

This drawn cup has no inner ring. Fw is the roller-inscribed diameter; C is cup width. Neither is an inner-ring bore or radial B width.

Family-specific dimensions

HK1212 bearing dimensions

This drawn cup has no inner ring. Fw is the roller-inscribed diameter; C is cup width. Neither is an inner-ring bore or radial B width. Values are source-published millimetre references unless identified as a structural field.

FwRoller inscribed diameter12 mm

DOutside diameter18 mm

CCup width12 mm

—Inner ring presentNo

Model	Fw — Roller inscribed diameter	D — Outside diameter	C — Cup width	— — Inner ring present
HK1212	12 mm	18 mm	12 mm	No

Model-specific review

Interpret this model's dimensions

This is the smallest roller-inscribed diameter in the listed HK subset. The reference records a cup without an inner ring, so the shaft-facing dimension must remain Fw rather than an invented inner-ring bore.

Specification boundary

Confirm the offered configuration

These values describe the cited engineering reference. They do not verify LTO-specific load ratings, speed limits, material, precision, clearance, seals, application suitability or interchangeability. Provide the complete designation, quantity, drawing and operating conditions for quotation review.

Source transparency

Technical reference and provenance

Reference publisher NTN; designation HK1212. Source checked 2026-09-21. Reference data alone do not establish the exact supplied configuration.

Model	HK1212
Bearing family	Needle Roller Bearings
Dimension schema	needle_drawn_cup_no_inner
Source document	NTN Needle Roller Bearings catalogue
Reference designation	HK1212
Supply review	Sourcing, production coordination and quotation support; actual configuration confirmed per offer.

DIMENSION SOURCENTN — NTN Needle Roller Bearings catalogueEngineering reference only. This source identifies data, not LTO manufacturing status or brand authorization.

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Sourcing and quotation

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