HK1212 Needle Bearing (Drawn Cup Needle Roller Bearing), ISO 3245

For a 12 mm shaft and an 18 mm housing bore, the HK1212 needle bearing (ISO 3245) is 12 mm wide. Modeled as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: HK1212 bearing
• Model id: iso3245-hk1212
• Standard: ISO 3245 · size HK1212

Files

Part key	Simplified
iso3245-hk1212	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
Fw	Bore diameter under the rollers		12		12	nominal	L1
D	Outside diameter		18		18	nominal	L1
C	Width		12		12	nominal	L1
r	Chamfer dimension	0.8			0.8	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-ISO3245-SZ-HK1212.pdf.

The HK1212 needle bearing beside the HK1210 and the HK1312

The HK1212 is number 16 of the 37 ISO 3245 needle bearings published here, listed from HK0306 to HK2526.

• Bore diameter under the rollers (Fw): 12 mm on the HK1212 needle bearing, against 12 mm on the HK1210 and 13 mm on the HK1312.
• Outside diameter (D): 18 mm on the HK1212 needle bearing, against 16 mm on the HK1210 and 19 mm on the HK1312.
• Width (C): 12 mm on the HK1212 needle bearing, against 10 mm on the HK1210 and 12 mm on the HK1312.
• Chamfer dimension (r): at least 0.8 mm on the HK1212 needle bearing, against at least 0.4 mm on the HK1210 and at least 0.8 mm on the HK1312.

Other sizes

• One size smaller: HK1210 Needle Bearing (Drawn Cup Needle Roller Bearing), ISO 3245, 12 mm bore, 16 mm OD, 10 mm wide.
• One size larger: HK1312 Needle Bearing (Drawn Cup Needle Roller Bearing), ISO 3245, 13 mm bore, 19 mm OD, 12 mm wide.

Documents

• CC-ISO3245-DS-HK1212.pdf: HK1212 datasheet: values with levels, sources
• CC-ISO3245-SZ-HK1212.pdf: HK1212 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

koyo-bs007-hk, ntn-bearingfinder-hk, schaeffler-hr1-hk, skf-17000-hk. Full citations: the method page and this size's datasheet.

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