INA HK1212 - Drawn Cup Needle Roller Bearing without Inner Ring, 12x18x12 mm

INA HK1212 - Drawn Cup Needle Roller Bearing without Inner Ring, 12x18x12 mm

The INA HK1212 is a precision-engineered drawn cup needle roller bearing without inner ring, offering a compact and lightweight solution for high-load applications with limited space. Manufactured by INA (Schaeffler Group), this bearing ensures optimal performance and reliability under demanding industrial conditions.

Its thin-walled steel outer ring is cold-formed and offers high radial load capacity. The lack of an inner ring allows the shaft to act as the raceway, saving space and weight — ideal for automotive transmissions, gearboxes, power tools, textile and packaging machinery.

Technical Specifications:

• Inner Diameter (d): 12 mm

• Outer Diameter (D): 18 mm

• Width (B): 12 mm

• Type: Drawn cup needle roller bearing (without inner ring)

• Dynamic Load Rating (C): ~6,500 N

• Static Load Rating (Co): ~7,300 N

• Max Speed (Grease): up to 20,000 rpm

• Material: Hardened steel

• Weight: Approx. 8 grams

• Standard Compliance: DIN 618-1 / ISO 3245

• Brand: INA / Schaeffler, Germany

Key Features:

• No inner ring - saves space and weight

• High radial load capacity despite compact design

• Ideal for use where shafts are hardened and ground

• Maintenance-free for many applications

• Trusted German quality from INA/Schaeffler

FAQ - Frequently Asked Questions:

Does INA HK1212 have an inner ring?
No. This version operates directly on the shaft. Make sure the shaft is properly hardened and ground.

What is this bearing used for?
Commonly used in transmissions, gearboxes, compressors, machine tools, and compact power units.

Can it run at high speeds?
Yes - up to 20,000 RPM when properly lubricated.

Is this bearing pre-lubricated?
It is typically delivered with initial factory lubrication, but re-lubrication may be required depending on the application.

Is INA a reputable brand?
Absolutely. INA (a Schaeffler brand) is one of the leading global manufacturers of precision bearings.