HK0608 FONKIN

Needle Roller and Cage Assembly HK0608 FONKIN

FONKIN HK0608 is a precision drawn‑cup needle roller bearing without an inner ring, designed for high radial load capacity in extremely compact mechanical spaces. Fully compliant with ISO 3245 standards, this bearing features high rigidity, low friction, and stable high‑speed performance, making it an ideal choice for miniature transmission systems and precision instruments.

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FONKIN HK0608 is a precision drawn‑cup needle roller bearing without an inner ring, designed for high radial load capacity in extremely compact mechanical spaces. Fully compliant with ISO 3245 standards, this bearing features high rigidity, low friction, and stable high‑speed performance, making it an ideal choice for miniature transmission systems and precision instruments.
Dimension Parameters
Bore (d): 6 mm; Outer diameter (D): 10 mm; Width (F): 8 mm; Minimum chamfer radius (rmin): 0.2 mm; Tolerance class: ISO P0; Dynamic radial load rating (Cr): 1.75 kN; Static radial load rating (C0r): 1.65 kN; Limiting speed (grease): 12,000 rpm; Weight: 0.003 kg.
Material Specification
Needle rollers and outer cup: GCr15 (100Cr6/AISI 52100) bearing steel, hardness 60–64 HRC, delivering excellent wear resistance, rolling fatigue strength, and dimensional stability. The drawn‑cup shell is cold‑formed from high‑strength alloy steel with enhanced surface integrity. A black oxide finish provides basic corrosion protection and improves lubricant retention.
Core Manufacturing Process
The bearing is produced through precision cold drawing, CNC finishing, vacuum heat treatment, precision grinding, and roller superfinishing. Heat treatment ensures uniform hardness and minimal deformation. Superfinishing achieves raceway roughness Ra ≤ 0.15 μm, reducing friction and noise. Full‑automatic assembly and 100% dimensional inspection ensure consistent quality.
Service Life
Under ISO 281 standard operating conditions (40% rated load, 5,000 rpm, proper lubrication), rated service life exceeds 6,000 hours. Service life is mainly affected by lubrication cleanliness, shaft hardness, installation alignment, and operating temperature.
Applications & Industries
Widely used in small gearboxes, power tools, household appliances, office equipment, automotive actuators, precision motors, and textile machinery. It serves automotive, home appliance, office automation, precision instrument, and small power tool industries, favored for its ultra‑compact size, high load density, and suitability for limited radial spaces.
Maintenance
Lubricate with NLGI 1/2 low‑temperature lithium grease, filling 25–35% of internal free space. Relubricate every 400–600 operating hours. Keep the working environment clean and dust‑free. Inspect noise, vibration, and temperature monthly; replace immediately if abnormal sound, overheating, or excessive clearance occurs.
Installation
Clean the shaft and housing bore before installation; confirm shaft hardness ≥ 58 HRC and roughness Ra ≤ 0.8 μm. Use a press to install the cup evenly without impact. Misalignment must be limited to ≤ 0.015 mm TIR. After installation, rotate manually to verify smooth operation and conduct a short test run.FONKIN HK0608 is a high‑reliability drawn‑cup needle roller bearing optimized for miniature high‑speed precision machinery, providing stable performance, long service life, and cost‑effective operation for compact industrial and consumer applications.

BRAND	FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/THK/HIWIN/PMI/TORRNGTON
BEARINGS NO.	HK0608 FONKIN
TYPE	Needle Roller and Cage Assembly
Inner(d)mm	6
Outer(D)mm	10
Width(B)mm	8
WEIGHT/KG	0.002
EAN CODE

Tel

+86-510-6831-3099

E-mail

fonkin-industries@188.com

Address

No.105, Huixin Road,Yuqi Industrial Park, Huishan District, hunqi Road, Yuqi Town, Wuxi, Jiangsu Province, P.R.CHINA

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