When your gear works beneath extraordinary outspread loads and challenging mechanical conditions, the Four Row Tapered Roller Bearing 38000 series conveys the unwavering quality you require. These specialized heading give load-bearing capacity that is 3.5-4 times more noteworthy than single-row heading, making them perfect for steel plants, mining operations, and overwhelming apparatus applications. With an integrals fashioned plan highlighting four columns of accuracy rollers, this arrangement handles extraordinary loads whereas keeping up operational soundness in cruel environments.

The thing utilizes a advanced multi-component arrange. The structure comprises of integrand made internal and outside rings that house four columns of diminished rollers interior precision-manufactured cages. Diverse spacer rings keep up true blue internal clearance, though optional metal seals secure against contamination.
This course of action disseminates extended and bidirectional center loads evenhandedly over all four roller columns. The diminished geometry makes line contact between rollers and raceways, maximizing stack movement and expecting edge stacking that commonly causes inopportune disillusionment in heavy-duty applications.
The working rule depends on the thick roller arrange to handle uncommon winding powers though satisfying coordinate center loads in both orientation. This arrange slaughters the require for various single-row introduction, diminishing foundation complexity and shaft length prerequisites.
|
Model Series
|
Basic Dimensions (mm) Inner Dia (d) × Outer Dia (D) × Width (B)
|
Rated Load (kN) Dynamic (C) / Static (C₀)
|
Application Scenarios
|
|
3801 Series
|
3801/220: 220 × 340 × 200; 3801/240: 240 × 360 × 200; 3801/250: 250 × 380 × 210
|
3801/220: 2850 / 7200; 3801/240: 3100 / 7800; 3801/250: 3350 / 8500
|
Medium-sized rolling mill backup rolls, small-scale mining conveyor rollers
|
|
3802 Series
|
3802/280: 280 × 420 × 220; 3802/300: 300 × 440 × 220; 3802/320: 320 × 460 × 230
|
3802/280: 3750 / 9500; 3802/300: 4100 / 10200; 3802/320: 4500 / 11000
|
Continuous casting machine segment rollers, medium-duty gearbox output shafts
|
|
3803 Series
|
3803/340: 340 × 500 × 260; 3803/360: 360 × 520 × 260; 3803/380: 380 × 540 × 270
|
3803/340: 5200 / 13500; 3803/360: 5600 / 14500; 3803/380: 6000 / 15500
|
Large-scale rolling mill work rolls, heavy-duty mining crusher shafts
|
|
3804 Series
|
3804/400: 400 × 580 × 300; 3804/420: 420 × 600 × 300; 3804/440: 440 × 620 × 310
|
3804/400: 6800 / 18000; 3804/420: 7300 / 19200; 3804/440: 7800 / 20500
|
Port crane slewing mechanisms, large-scale cement mill rollers
|
|
3805 Series
|
3805/460: 460 × 650 × 330; 3805/480: 480 × 680 × 330; 3805/500: 500 × 710 × 340
|
3805/460: 8500 / 22500; 3805/480: 9100 / 24000; 3805/500: 9800 / 25500
|
Heavy-duty rolling mill universal rolls, large marine propulsion shafts
|
|
3806 Series
|
3806/530: 530 × 750 × 360; 3806/560: 560 × 780 × 360; 3806/600: 600 × 820 × 380
|
3806/530: 10500 / 27500; 3806/560: 11200 / 29000; 3806/600: 12000 / 31000
|
Ultra-heavy-duty mining excavator arms, large-scale steel plant continuous rolling mill rolls
|
|
3810 Series (Metric)
|
3810/120: 120 × 210 × 136; 3810/140: 140 × 230 × 140; 3810/160: 160 × 250 × 144
|
3810/120: 1580 / 3850; 3810/140: 1820 / 4400; 3810/160: 2080 / 5000
|
Small to medium-sized gearboxes, agricultural machinery reducers, light-duty conveyor rollers
|
|
3820 Series (Metric)
|
3820/180: 180 × 280 × 170; 3820/200: 200 × 310 × 180; 3820/220: 220 × 340 × 190
|
3820/180: 2450 / 6100; 3820/200: 2750 / 6800; 3820/220: 3050 / 7500
|
Medium-sized crusher shafts, textile machinery main shafts, diesel generator sets
|
Predominant Stack Capacity
The four-row plan gives unmatched outspread stack taking care of capabilities. Each push offers the add up to stack, diminishing push concentration and amplifying bearing life altogether compared to conventional single or double-row configurations.
Enhanced Rigidity
The compact integration of four columns into a single unit conveys predominant shaft unbending nature. This characteristic demonstrates basic for applications requiring exact situating, such as rolling process work rolls where item dimensional exactness depends on negligible deflection.
Impact Resistance
Special warm treatment forms and high-purity bearing steel development empower these heading to withstand overwhelming stun loads common in mining and steel handling operations. The strong plan avoids brinelling and keeps up execution beneath sudden stack variations.
Mounting Efficiency
The divisible plan encourages simple establishment on roll necks and apparatus shafts. Pre-adjusted spacers dispense with on-site clearance alterations, decreasing establishment time and guaranteeing legitimate inner geometry.

Steel Mill Operations
Rolling process work rolls and reinforcement rolls speak to the most requesting application for the Four Row Tapered Roller Bearing 38000 series. These heading keep up roll steadiness beneath extraordinary rolling powers whereas obliging warm extension in hot rolling operations.
Harbour and Marine Equipment
Super-heavy cranes and holder taking care of gear depend on these orientation for their uncommon stack capacity and stun resistance. The fixed variations secure against saltwater defilement and cruel natural conditions.
Mining Machinery
Large crushers, pounding plants, and fabric taking care of gear advantage from the series' capacity to handle nonstop overwhelming loads and affect strengths. The vigorous development withstands the grating environment ordinary of mining operations.
Industrial Roll Presses
Cement generation, paper fabricating, and metal shaping hardware utilize these heading where tall spiral loads and exact roll situating are fundamental for item quality.
Our quality control framework guarantees reliable execution through comprehensive testing conventions. Each bearing experiences fashioning blemish discovery, roller consistency confirmation, and outspread stack capacity testing to affirm the ≥10,000 kN rating.
Vibration testing and life testing approve execution beneath genuine working conditions. Our three-level quality control framework keeps up an ex-factory capability rate surpassing 99.9%, guaranteeing dependable operation in your basic applications.
Temperature resistance testing affirms execution up to 500°C for specialized applications, whereas accuracy confirmation guarantees compliance with P0, P6, and P5 resilience classes.
We get it that overwhelming mechanical applications regularly require specialized arrangements. Our building group gives custom alterations to the item for one of a kind working conditions or dimensional requirements.
Technical back incorporates on-site mapping administrations for substitution applications, establishment direction, and execution optimization suggestions. Our 30 a long time of bearing industry involvement empowers us to address complex application challenges effectively.
For applications requiring amplified benefit life or extraordinary working conditions, we offer fabric updates and specialized warm medicines to upgrade execution characteristics.

Ready to solve your heavy-duty bearing challenges? Contact our technical specialists at auto@lyautobearing.com to discuss your specific application requirements. Our team will recommend the optimal Four Row Tapered Roller Bearing 38000 series configuration for your equipment and provide comprehensive technical support to ensure successful implementation.
Learn about our latest products and discounts through SMS or email