FKN-U2782 FONKIN

Needle Roller and Cage Assembly FKN-U2782 FONKIN

FONKIN FKN-U2782 is a premium single-row ball bearing type one-way clutch with inner ring keyway and double-sided contact seals. Engineered with precision sprag elements and optimized internal geometry, it delivers stable overrunning, reliable backstopping, high torque transmission, and exceptional contamination resistance. Designed for precision industrial drives, it ensures precise indexing, efficient power transmission, and extended service life in directional lock applications.

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FONKIN FKN-U2782 is a premium single-row ball bearing type one-way clutch with inner ring keyway and double-sided contact seals. Engineered with precision sprag elements and optimized internal geometry, it delivers stable overrunning, reliable backstopping, high torque transmission, and exceptional contamination resistance. Designed for precision industrial drives, it ensures precise indexing, efficient power transmission, and extended service life in directional lock applications.
1. Dimension Parameters (ISO 492 & DIN 625 Standard)
- Bore (d): 60 mm (tolerance: n6, −0.019/−0.010 mm)
- Outer diameter (D): 110 mm (tolerance: N7, 0/+0.023 mm)
- Width (B): 28 mm (tolerance: ±0.05 mm)
- Chamfer (r min): 1.5 mm
- Inner ring keyway: 18×7 mm (ISO standard)
- Weight: 0.92 kg
- Dynamic torque rating (Tr): 420 N·m
- Static torque rating (T0r): 560 N·m
- Limiting speed (grease): 4,500 rpm
- Radial clearance: CN (0.010–0.020 mm)
- Seal type: Double-sided 2RS NBR contact seals
- Precision class: ISO P0 (ABEC 1)
2. Material Specification
- Inner/outer rings: 100Cr6 (GCr15/AISI 52100) bearing steel. Hardness: 60–64 HRC; high hardness, excellent wear resistance, and dimensional stability.
- Sprag elements: 55SiMnVB spring steel; optimized hardness (52–56 HRC) for high torsional strength and fatigue resistance.
- Cage: Glass-filled PA66 nylon; self-lubricating, low friction, precise sprag guidance, temperature resistance up to 120°C.
- Seals: NBR nitrile rubber; effective dust/moisture exclusion, operating temp: -30°C to +110°C.
3. Core Manufacturing Process
- Precision hot forging: Refined grain structure for maximum torque capacity.
- CNC machining: Dimensional accuracy ≤ ±0.004 mm, strict geometric conformity.
- Vacuum heat treatment: Uniform hardness, minimal distortion, enhanced fatigue life.
- Grinding & superfinishing: Raceways (Ra ≤ 0.05 μm) for low friction and smooth overrunning.
- Automated assembly: 100% torque, backlash, and seal integrity inspection per FONKIN standards.
4. Service Life
- Standard rating life (L10): 10,000–12,000 hours (ISO 281:2007; 70% Tr load, 2,000 rpm, NGLI 2 grease).
- Key factors: Lubrication condition, contamination, operating temperature (-20°C to +100°C), alignment accuracy, and load direction.
5. Applications & Industries
- Packaging machinery: Bagging machines, labeling systems (precise indexing, backstopping).
- Material handling: Conveyors, escalators (one-way drive, overload protection).
- Textile machinery: Yarn twisters, winding machines (directional lock, low backlash).
- Industrial gearboxes: Reducers, pump drives (overrunning clutch, reverse prevention).
- Automation equipment: Robotic arms, CNC rotary tables (high torque, precise positioning).
6. Maintenance & Lubrication
- Lubricant: FONKIN Lube EP2 lithium complex grease (NGLI 2).
- Regreasing interval: 1,500–2,000 hours; 800 hours in harsh environments.
- Grease quantity: 45–50 g (30–35% internal free space).
- Inspection: Every 1,000 hours; check torque loss, abnormal noise, and seal condition.
7. Installation Guidelines
- Pre-installation: Clean shaft/housing (Ra ≤ 1.6 μm); verify keyway fit and dimensions.
- Mounting: Hydraulic press or thermal expansion (70–80°C); avoid hammering on clutch body.
- Alignment: Angular misalignment ≤ 0.3°; radial runout ≤ 0.004 mm.
- Fastening: Lock nut torque: 180–200 N·m; tighten evenly to prevent distortion.
- Post-installation: Test overrunning smoothness; verify torque transmission; check temperature rise <35°C.

BRAND	FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/THK/HIWIN/PMI/TORRNGTON
BEARINGS NO.	FKN-U2782 FONKIN
TYPE	Needle Roller and Cage Assembly
Inner(d)mm	27
Outer(D)mm	82
Width(B)mm
WEIGHT/KG	0.55
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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