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Tapered Roller Bearings 3386/3320 TIMKEN

TIMKEN 3386/3320 is a high‑performance imperial single‑row tapered roller bearing engineered to carry heavy combined radial and axial loads, offering exceptional rigidity, wear resistance, and extended service life for heavy‑duty industrial and automotive powertrain systems. Compliant with ISO 492 and ANSI/AFBMA 12 standards, this bearing ensures precise mounting, stable operation, and reliable performance in harsh environments.

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TIMKEN 3386/3320 is a high‑performance imperial single‑row tapered roller bearing engineered to carry heavy combined radial and axial loads, offering exceptional rigidity, wear resistance, and extended service life for heavy‑duty industrial and automotive powertrain systems. Compliant with ISO 492 and ANSI/AFBMA 12 standards, this bearing ensures precise mounting, stable operation, and reliable performance in harsh environments.
Dimensions & Tolerances
Bore (d): 39.688 mm; Outer diameter (D): 80.167 mm; Total width (T): 29.370 mm; Cone width (B): 30.391 mm; Cup width (C): 23.813 mm; Chamfer (rₘₐₓ): 3.30 mm; Cone backface radius (R): 0.80 mm; Tolerance class: ISO Normal (P0); Weight: 0.65 kg; Dynamic radial rating (C90): 29.8 kN; Static radial rating (C0): 129 kN.
Material Specification
Cone (inner ring), cup (outer ring), and rollers: AISI 52100 (SUJ2) high‑carbon chromium bearing steel, hardness HRC 60–64, delivering high rolling contact fatigue strength, excellent wear resistance, and outstanding dimensional stability. Cage: stamped steel for robust roller guidance, high load capacity, and thermal stability under heavy loads.
Core Manufacturing Processes
Hot forging refines grain structure for enhanced toughness; precision CNC turning ensures near‑net shape consistency; vacuum heat treatment provides uniform hardness and minimal distortion; precision grinding controls raceway and roller geometry; superfinishing reduces surface roughness to Ra ≤ 0.02 μm, improving lubricant retention and lowering friction.
Service Life
Basic rating life calculated per ISO 281:2007; under standard lubrication and clean conditions, nominal L₁₀ life ≥ 4,500 hours at rated load. Key life factors: lubricant quality, contamination control, alignment accuracy, preload setting, and operating temperature.
Applications & Industries
Widely used in automotive axles, commercial vehicle hubs, construction machinery, agricultural equipment, industrial gearboxes, and railway components. Its separable design, high load capacity, and ability to withstand combined loads make it ideal for shock‑ and vibration‑prone heavy‑duty applications.
Maintenance Requirements
Inspect every 1,000 operating hours; lubricate with TIMKEN premium lithium complex grease; fill 30%–50% of internal free space; clean with lint‑free cloth and petroleum solvent; check for abnormal noise, heat, or leakage; replace if raceway spalling, cage deformation, or excessive clearance occurs.
Mounting Instructions
Clean mating surfaces and verify dimensions; use induction heating for cone mounting (max. 120°C); alignment error ≤ 0.01 mm/m; follow specified axial preload and fastener torque; post‑installation test radial clearance and temperature rise ≤ 40°C; wear heat‑resistant gloves and avoid impact loading.
BRAND FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/THK/HIWIN/PMI
BEARINGS NO. 3386/3320 TIMKEN
TYPE Tapered Roller Bearings
Inner(d)mm 39.68
Outer(D)mm 80.16
Width(B)mm 29.37
WEIGHT/KG 0.65
EAN CODE
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No.105, Huixin Road,Yuqi Industrial Park, Huishan District, hunqi Road, Yuqi Town, Wuxi, Jiangsu Province, P.R.CHINA

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Next Tapered Roller Bearings L 730649/610 SKF

BRAND	FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/THK/HIWIN/PMI
BEARINGS NO.	3386/3320 TIMKEN
TYPE	Tapered Roller Bearings
Inner(d)mm	39.68
Outer(D)mm	80.16
Width(B)mm	29.37
WEIGHT/KG	0.65
EAN CODE

Tapered Roller Bearings 3386/3320 TIMKEN

Dimensions & Tolerances

Material Specification

Core Manufacturing Processes

Service Life

Applications & Industries

Maintenance Requirements

Mounting Instructions

Tel

E-mail

Address

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