INA SL185018-AC3 is a double-row, full-complement cylindrical roller bearing engineered by Schaeffler Group. Featuring a cageless design, AC3 internal clearance, and semi-locating structure, it delivers exceptional radial load capacity, high rigidity, and reliable axial displacement tolerance. Engineered for heavy-duty industrial environments, it maximizes roller density for superior load distribution and extended service life under extreme stress.
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INA SL185018-AC3 is a double-row, full-complement cylindrical roller bearing engineered by Schaeffler Group. Featuring a cageless design, AC3 internal clearance, and semi-locating structure, it delivers exceptional radial load capacity, high rigidity, and reliable axial displacement tolerance. Engineered for heavy-duty industrial environments, it maximizes roller density for superior load distribution and extended service life under extreme stress.
Bore (d): 90 mm (tolerance: −0.012/+0 mm, ISO P0/ABEC 1)
Outer diameter (D): 140 mm (tolerance: 0/+0.022 mm)
Width (B): 67 mm (tolerance: ±0.05 mm)
Chamfer (r min): 2.1 mm
Weight: 3.62 kg
Dynamic load rating (Cr): 355 kN
Static load rating (C0r): 560 kN
Limiting speed (grease): 2,200 rpm; (oil): 2,800 rpm
Radial clearance (AC3/C3): 0.015–0.028 mm
Structure: Double-row, full complement (cageless), semi-locating
Precision class: ISO P0 (standard precision)
Inner/outer rings & rollers: 100Cr6 (GCr15/SUJ2/AISI 52100) high-carbon chromium bearing steel. Hardness: 60–64 HRC; excellent rolling fatigue strength, wear resistance, and dimensional stability under extreme radial loads.
Cage: Cageless (full complement) design. Maximizes roller count for unparalleled load capacity; optimized roller-to-raceway contact for high rigidity.
Surface: Black oxide anti-corrosion treatment; enhances rust protection in harsh industrial conditions.
Precision hot forging: Controlled grain flow for optimal load-bearing integrity and impact resistanceINA.
CNC turning: Dimensional accuracy ≤ ±0.005 mm, ensuring strict geometric conformityINA.
Vacuum heat treatment: Uniform martensitic structure, minimal distortion, and consistent hardness distributionINA.
Profile grinding: Log-convex raceway & roller profiling (Ra ≤ 0.16 μm) to reduce stress concentrationINA.
Superfinishing: Honing process (Ra ≤ 0.05 μm) for ultra-smooth contact surfaces, minimizing friction and wearINA.
Automated assembly: 100% dimensional, clearance, and noise inspection complying with INA quality standardsINA.
Standard rating life (L10): 7,000–9,000 hours (ISO 281:2007; 65% Cr radial load, 1,200 rpm, clean NLGI 2 EP grease)INA.
Key influencing factors: Lubrication contamination, operating temperature (-30°C to +120°C), mounting alignment, shaft hardness (≥58 HRC), and axial displacement limits.
Mining equipment: Crushers, vibrating screens, conveyor pulleys (extreme radial load capacity).
Steel industry: Continuous casting machines, rolling mill gearboxes (shock load resistance).
Construction machinery: Excavator travel drives, crane hoist mechanisms (high rigidity).
Industrial gearboxes: Heavy-duty speed reducers, conveyor drives (semi-locating axial tolerance).
Wind power: Wind turbine gearboxes, yaw drives (reliable heavy-load performance).
Lubricant: INA LG3 lithium complex grease (NLGI 2) or ISO VG 150–220 EP mineral oilINA.
Regreasing interval: 1,000–1,200 hours; 500 hours in heavy dust/moistureINA.
Grease quantity: 45–50 g (30–35% of internal free space)INA.
Inspection: Every 600 hours; check operating temperature (<90°C), noise, vibration, and lubricant leakageINA.
Pre-installation: Clean shaft/housing to Ra ≤ 1.6 μm; inspect for burrs, corrosion, and dimensional accuracy.
Mounting: Hydraulic press (max 180 kN) or induction heating (80–90°C); avoid direct impact on raceways.
Alignment: Angular misalignment ≤ 2′ (0.033°); radial runout ≤ 0.006 mm.
Fastening: Lock nut torque: 180–200 Nm (grade 8.8 bolts); uniform tightening sequence.
Post-installation: Manual rotation check; temperature rise <35°C above ambient; vibration testing.
| BRAND | INA/FONKIN/SKF/FAG/NSK/NTN/TIMKEN/ZKL/PEP/KOYO/TSUBAKI |
| BEARINGS NO. | SL185018-AC3 INA |
| TYPE | Cylindrical Roller Bearing Double Row |
| Inner(d)mm | 90 |
| Outer(D)mm | 140 |
| Width(B)mm | 67 |
| WEIGHT/KG | 3.62 |
| EAN CODE | 4054364 123093 |
+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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