Single Row Tapered Roller Bearing 10x30x9.75mm 30200 Bearing For Light To Medium Load Scenarios

30200 is a single-row tapered roller bearing, a precision transmission component designed for light-to-medium load scenarios. It features a separable design (inner ring with rollers and cage, outer ring independent), making it suitable for compact-space, high-speed combined load applications. Key advantages include low friction, high rigidity, and long service life, making it widely used in industrial equipment, automobiles, medical devices, and other fields.

• Efficient under light loads (pure rolling reduces friction)
• Stable precision (low vibration at high speeds)
• Durable and reliable (bearing steel enhances fatigue resistance)

• Industrial: Small motors, screw compressors (e.g., 30200 used in DHK screw compressor main transmission systems), micro reducers
• Automotive: Steering knuckles, auxiliary supports for gearboxes, withstanding combined radial and axial loads
• Medical and Civil: Dental equipment (e.g., dental drill spindles), printer paper-feeding mechanisms, fitness equipment drive shafts
• Special Environments: For high temperatures (+120℃), optional C3 clearance + high-temperature grease; for dusty environments, compatible with triple-lip seals

• Grease lubrication: Fill 1/3-1/2 of the bearing space; recommended to use extreme pressure lithium-based grease containing MoS₂ (e.g., ISO L-XBCHB2). For high-temperature environments, shorten lubrication intervals by 30%
• Oil lubrication: For high-speed conditions (dn＞300,000), use oil bath lubrication with viscosity ≥100 mm²/s at 40℃. Regularly test oil contamination (below ISO 4406 18/16/13 class)

• Heating installation: Oil bath heating to 80-100℃ (not exceeding 120℃); after hot fitting, axial preload should be controlled within 0.05-0.10 mm clearance range
• Alignment accuracy: Coaxiality error ≤0.005 mm to avoid uneven loading causing early wear

• Vibration analysis: Use acceleration sensors to monitor high-frequency bands (5-10kHz); abnormal characteristic frequencies (e.g., BPFO) indicate early damage
• Temperature monitoring: Normal operating temperature <90℃, temperature rise <40℃; infrared thermography can detect hot spots

• Complies with JB/T 10236-2001 Technical Conditions for Vibration of Tapered Roller Bearings, with vibration velocity ≤1.8 mm/s (Group V)
• The 2025 revised ISO 7544 Cleanliness Test Methods requires internal bearing particle size ≤100μm

• Clearance adjustment: C3 clearance for high-speed (e.g., motors), C4 clearance for high temperatures (+150℃) or large temperature differences
• Coating treatment: Black oxide coating (SKF VA405) improves corrosion resistance; nickel plating is suitable for food-grade equipment
• Seal design: Optional contact rubber seals (dust-proof) or non-contact labyrinth seals (high-speed)