SNR ESFC210 is a premium round flange-mounted ball bearing unit with eccentric locking, engineered for robust self-alignment, reliable contamination resistance, and stable operation in heavy-duty industrial environments. Conforming to ISO 12240-1 and ABMA standards, this unit integrates a high-precision insert bearing and robust cast housing, delivering optimal performance for continuous heavy-load rotating machinery.
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SNR ESFC210 is a premium round flange-mounted ball bearing unit with eccentric locking, engineered for robust self-alignment, reliable contamination resistance, and stable operation in heavy-duty industrial environments. Conforming to ISO 12240-1 and ABMA standards, this unit integrates a high-precision insert bearing and robust cast housing, delivering optimal performance for continuous heavy-load rotating machinery.
Bore (d): 50 mm; Outer diameter (housing, D): 165 mm; Overall width (B): 51.6 mm; Chamfer dimension (rmin): 2 mm; Bolt circle (J): 135 mm; Tolerance class: P0 (ABEC 1); Dynamic radial load (Cr): 35.1 kN; Static radial load (Cor): 23.2 kN; Limiting speed (grease): 4,300 rpm; Weight: 2.25 kg.
Inner/Outer Ring & Balls: AISI 52100 (100Cr6/GCr15) bearing steel, hardness 60–64 HRC, high rolling fatigue strength, wear resistance, and dimensional stability.
Cage: Steel sheet stamping (JIS G3141), precision-formed for stable roller guidance and low friction.
Housing: GG20 grey cast iron, high rigidity, vibration damping, and shock resistance.
Seal: NBR rubber single-lip seal with slinger, effective dust and moisture exclusion.
Hot forging: Refines grain structure for enhanced mechanical strength.
CNC machining: Ensures housing and bearing dimensional precision.
Vacuum heat treatment: Uniform hardness, minimized distortion, and improved toughness.
Precision grinding & superfinishing: Raceway roughness Ra ≤ 0.2 μm, reducing friction and noise.
Automated assembly & 100% inspection: Validates clearance, alignment, and sealing performance.
Under ISO 281 standard conditions (40% rated load, 2,000 rpm, proper lubrication), rated life ≥8,500 hours. Key influencing factors: lubrication cleanliness, alignment, contamination, operating temperature (-20°C to +100°C), and load consistency.
Ideal for conveyors, mixers, crushers, agricultural machinery, fans, pumps, and material handling equipment. Serves mining, agriculture, construction, food processing, and general manufacturing due to superior self-alignment (up to 2°), rugged housing, and effective sealing, adapting to harsh, dusty, and high-vibration conditions.
Lubrication: NLGI 2 lithium complex grease, fill 30–40% of internal voids; relubricate via M6x1 fitting every 800–1,000 hours.
Inspection: Monthly checks for abnormal noise, vibration (>2.8 mm/s), and temperature (>85°C).
Cleanliness: Maintain sealed housing integrity; prevent dust/moisture ingress.
Prep: Clean shaft/housing; verify shaft hardness ≥55 HRC and roughness Ra ≤1.6 μm.
Mount: Press-fit housing evenly; lock bearing via eccentric collar (torque 12–15 N·m).
Alignment: Total indicator runout (TIR) ≤0.03 mm; avoid impact loading.
Post-install: Rotate manually to confirm smooth operation; test-run 1 hour and monitor temperature.
SNR ESFC210 stands as a top-tier flange ball bearing unit for heavy-duty industrial machinery, offering exceptional durability, alignment flexibility, and low maintenance for demanding operational environments.
| BRAND | FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/THK/HIWIN/PMI |
| BEARINGS NO. | ESFC210 SNR |
| TYPE | Housing and Bearing (assembly) |
| Inner(d)mm | 50 |
| Outer(D)mm | |
| Width(B)mm | |
| WEIGHT/KG | 2.9 |
| EAN CODE | 3413529509836 |
+86-510-6831-3099
No.105, Huixin Road,Yuqi Industrial Park, Huishan District, hunqi Road, Yuqi Town, Wuxi, Jiangsu Province, P.R.CHINA
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