HK1512-AS1 / HK1512 Open End Drawn Cup Needle Roller Bearing With Oil Hole , 15*21*12mm

HK1512 and HK1512-AS1 are metric single-row through open drawn cup needle roller bearings without inner ring, unified core dimension Fw=15mm matching shaft diameter, outer diameter D=21mm, overall width C=12mm. HK series adopts integrated one-piece stamped thin steel outer cup, directly pressed into housing interference hole without extra snap rings or positioning sleeves to cut assembly steps.

• HK1512: Standard double open ends without any shield or seal, excellent heat dissipation, suitable for clean, dry indoor working environments with regular lubrication maintenance;
• HK1512-AS1: Equipped with single side thin stamped steel AS1 non-contact metal shield, blocks coarse dust, metal scraps and large debris, no friction resistance to maintain high rotating speed, ideal for dry slightly dusty processing workshops without liquid splash.

Stamped thin steel cage evenly separates dense needle rollers to realize high radial bearing capacity under ultra-narrow radial cross-section. The matched installation shaft surface must be quenched and mirror superfinished to HRC60–64 to act as inner raceway. This series only bears pure radial load, widely used for miniature gearboxes, handheld power tools, textile tension rollers, automation blind hole sliding parts, micro hydraulic valves and light agricultural machinery shaft end assemblies with strict radial space limitations.

Fw (Needle assembly inner diameter): 15 mm

Outer Diameter D: 21 mm

Overall Width C: 12 mm

Structure: Single row through open drawn cup needle bearing, no inner ring, stamped carbon steel roller retainer

Material: Drawn cup & needle rollers GCr15 high-carbon chrome bearing steel

Standard Radial Clearance: CN normal clearance

Reference grease limiting rotation speed: 15300 r/min

Oil lubrication limiting rotation speed: 19100 r/min

Required matching shaft hardness: HRC60–64 mirror superfinishing

Minimum chamfer r: 0.6 mm

Protection: Both ends fully open, no shield or rubber seal

Dynamic Load Cr: 8760 N

Static Load Cor: 11400 N

Fatigue Load Limit Pu: 1620 N

Net Weight: 0.0098 kg

Protection: Single side AS1 thin non-contact stamped steel dust shield

Dynamic Load Cr: 8510 N

Static Load Cor: 11060 N

Fatigue Load Limit Pu: 1580 N

Net Weight: 0.0101 kg

Complete dimensional drawings and full technical load data of two models are available upon customer request.

1. Integral thin steel drawn cup press-fit design, directly pressed into housing interference hole without additional axial fixing parts, reduce component quantity and assembly labor cost
2. Ultra-thin radial cross-section minimizes equipment radial occupied space, perfectly meets miniaturized compact transmission structural design requirements
3. Two protection options (open / single AS1 metal shield) cover two mainstream dry working conditions: ultra-clean dry environment and dry workshop with coarse dust scraps
4. AS1 thin steel non-contact shield brings zero extra friction loss, will not reduce limit rotation speed while blocking large solid particles, different from friction RS rubber seals
5. Dense needle roller arrangement provides outstanding radial rigidity and load capacity, stable continuous medium-speed operation under frequent start-stop light shock loads
6. Customizable options include double-sided AS2 metal shields, single/double RS rubber seals, C3 enlarged radial clearance, stainless steel anti-rust drawn cup, OEM laser marking and high-temperature wear-resistant grease filling

Effectively simplify blind hole housing machining processes and extend service life of compact shaft-end transmission assemblies

This HK1512 / HK1512-AS1 dual-spec open drawn cup needle roller bearing set is widely matched for the following compact light & medium industrial equipment:

• Miniature reduction gearboxes, small transmission box blind hole shaft end supporting assemblies
• Handheld electric power tools, garden mini machinery and light agricultural rotary moving parts
• Textile weaving looms, small printing equipment tension sliding roller units
• Automation miniature linear sliding mechanisms and cam shaft positioning components
• Small dry processing machinery, micro equipment lightweight rotary sliding assemblies
• Aftermarket replacement spare parts for 15mm inner diameter open drawn cup needle roller bearing equipment

Ideal dual-option high radial load bearing solution for dry environment compact industrial transmission equipment

• 25 years of professional HK series open drawn cup needle roller bearing manufacturing experience
• Two models fully dimensionally interchangeable with international standard HK1512 series bearings, consistent dimensional tolerance and load performance indicators
• Complete OEM & ODM customized service supporting double-sided AS metal shields, rubber sealing, stainless steel shell and special clearance customization
• Full-process strict inspection: raw material hardness testing, drawn cup deep drawing precision, AS shield assembly tightness and dynamic load fatigue cycle testing before delivery
• Professional bearing engineering team provides blind hole housing interference tolerance and matching shaft hardness installation guidance within 24 hours
• Stable large-scale mass production assembly lines with preferential bulk wholesale price for long-term machinery equipment manufacturers

We focus on stable press-fit performance, high-speed dust resistance and long-term win-win cooperation with global industrial buyers

• Raw material chemical composition and surface hardness inspection of GCr15 chrome bearing steel
• Precision deep drawing, trimming and forming processing for integral open outer drawn cup
• Constant temperature heat treatment process to stabilize internal metal stress and enhance surface wear resistance
• Comprehensive performance testing: radial clearance uniformity, needle roller arrangement consistency, dynamic/static load capacity and AS metal shield dust-blocking durability
• Uniform roller assembly inspection and separate dimensional & appearance re-inspection for each model before anti-rust packaging and shipment

Every batch of bearings passes full sampling reciprocating cycle durability test to guarantee stable heavy radial load operation in dry workshop equipment

If you need high-quality HK1512 open type and HK1512-AS1 single metal shield drawn cup needle roller bearings for miniature gearbox and dry processing automation equipment, send your inquiry to us directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory quotation reply within 24 hours
• One-on-one blind hole housing interference tolerance & matching shaft hardness parameter matching guidance by professional bearing engineers
• Customized bearing solution suggestions including double AS2 shield and RS sealed variants and stainless steel anti-rust drawn cup options
• Competitive direct factory bulk wholesale price for mixed two-model combined bulk orders

Send your required purchase quantity of each model and equipment working environment to obtain detailed formal quotation