four-row tapered roller bearing

38 Series four-row tapered roller bearings are heavy-duty bearings designed for rolling mill work rolls. They feature high rigidity, heavy radial and bidirectional axial load capacity, and long service life. Suitable for hot and cold rolling mills, bar mills and wire mills. sufficient stock and custom solutions.

Classification :

Tapered Roller Bearings

Keywords :

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PRODUCT DETAILS

38 Series four-row tapered roller bearings are professional heavy-duty bearings mainly used for rolling mill work rolls and backup rolls. With a four-row roller structure, these bearings can carry extremely high radial loads and bidirectional axial loads at the same time, ensuring stable performance under continuous heavy working conditions.

Built from high-quality bearing steel, 38 Series bearings provide excellent wear resistance, high rigidity and improved running accuracy. They are widely applied in hot rolling mills, cold rolling mills, bar mills, wire mills and other metallurgical heavy machinery.

Our 38 Series four-row tapered roller bearings can be used as replacements for well-known international brands. We keep sufficient stock for fast delivery and also accept custom sizes and structures to meet different application requirements.

Bearing Number	Dimensions(mm)	Bearing Number	Dimensions(mm)	Bearing Number	Dimensions(mm)
381992/HC	460×620×310	382044	220×340×305	382052X2/C9	260×400×255
381992	460×620×310	382044/P52	220×340×305	382052X2/C2	260×400×255
381992/C2	460×620×310	382044/C2	220×340×305	382052X2/C3	260×400×255
381992/P6	460×620×310	382048	240×360×310	382052X2/C4	260×400×255
3819/540	540×690×400	382052/P62	260×400×345	382052X2/C5	260×400×255
3819/560	560×750×368	382052/C2	260×400×345	382056X2	280×420×345
3819/560/HCC2YA3	560×750×368	382060	300×460×390	382064X2/YB2	320×480×380
3819/560/C2	560×750×368	382064	320×480×380	382064X2/P5	320×480×380
3819/600J/HC	600×800×380	3820/950/C2	950×1360×880	382064X2/P52	320×480×380
3819/600	600×800×380	3820/1060/C2	1060×1500×1000	382064X2/C2YB2	320×480×380
3819/600HCC2YA3	600×800×380	382064/P42	320×480×380	382064X2/C2	320×480×380
3819/600/C2	600×800×380	381156	280×460×324	381152X2	260×440×300
3819/630/HC	630×850×418	381156/C9	280×460×324	381152X2/C9	260×440×300
3819/630	630×850×418	381156/C2	280×460×324	381160X2	300×500×350
3819/630/C2	630×850×418	381160	300×500×370	381160X2/HC	300×500×350
3819/670	670×900×412	381160/C9	300×500×370	381160X2/C9	300×500×350
3819/670/HC	670×900×412	381160/C2	300×500×370	3811/750X2/HC	750×1220×840
3819/670/C2	670×900×412	381164	320×540×406	3811/560X2/C2	560×920×620
382930	150×210×165	381168	340×580×204.5	3811/600X2	600×980×650
382952	260×360×265	381168/C2	340×580×425	381176X2	380×620×388
382952/C2	260×360×265	381168/C3S0	340×580×425	380622	110×160×115
382960	300×420×300	381172	360×600×420	D77927	133.35×196.85×193.675
382960/C2	300×420×300	381172/HC	360×600×420	D77928	139.7×200.025×60.338
382968	340×460×310	381176	380×620×420	380640	200×282×206
382968/C2	340×460×310	381176/C9	380×620×420	380641	205×320×205
382968X2/C9	300×420×310	381176/C2	380×620×420	380641/C2	205×320×205
382972X2	360×480×375	381180	400×650×456	380649/C9	245×380×254
381036	180×280×180	381184	420×700×480	380650	250×385×255
381068	340×520×325	381184/C2	420×700×480	380664	320×460×338
381068/C2	340×520×325	381188	440×720×480	380664/YB2	320×460×380
381072	360×540×325	381192	460×760×520	380670	350×590×420
381072/C9	360×540×325	381196	480×790×530	380670/HC	350×590×420
381072/C2	360×540×325	3811/500	500×830×570	380670/C2	350×590×420
371076	380×560×325	3811/530	530×870×590	380670/C3	350×590×420
381076/C2	380×560×325	3811/530/C2	530×870×590	380676	380×550×350
381080	400×600×356	3811/560	560×920×300	380676/C2	380×550×350
384080/HC	400×600×356	3811/560/C2	560×920×620	380679	395×545×288.7
381080/C2	400×600×356	3811/600/HC	600×980×650	380679/YA	395×545×288.7
381080/C3	400×600×356	3811/600	600×980×650	380679/HCC9	395×545×288.7
381084	420×620×356	3811/600/C2	600×980×650	380679/C9	395×545×288.7
381084/C2	420×620×356	3811/630	630×1030×670	380679/C2	395×545×288.7
381088	440×650×376	3811/630/C2	630×1030×670	380680/HC	400×540×280
381088/C2	440×650×376	3811/670	670×1090×710	380680	400×700×480
381092	460×680×410	3811/710	710×1150×362	380684	420×760×500
391092/C2	460×680×410	3811/710/C2	710×1150×362	380684/C2	420×760×500
381096	480×700×200	3811/750/HC	750×1220×840	380688	440×620×454
381096/HC	480×700×420	3811/750	750×1220×840	380688/HC	440×620×454
381096/C9	480×700×420	3811/750/C9	750×1220×840	380688/C9	440×620×454
381096/C2	480×700×420	3811/750/YA	750×1220×840	380688/C2	440×620×454
3810/500	500×720×420	3811/750/C2	750×1220×840	380692/C9	460×650×474
3810/500C2	500×720×420	3811/750/C2YA	750×1220×840	380692/C2	460×650×474
3810/530	530×780×450	3811/750/C2YA1	750×1220×840	380692/YB2	460×730×440
3810/530C2	530×780×450	3811/850	850×1360×900	380692	460×730×440
3810/560	560×820×465	381992X3/YA	460×610×360	380692/C9YB2	460×730×440
3810/600/HC	600×870×480	3819/600X2	600×800×365	380692/C2YB2	460×730×440
3810/600	600×870×480	381030X2	450×250×136	3806/488.95/YA3	488.95×622×365.125
3810/600/C2	600×870×480	381036X2	180×280×180	3806/488.95/YA3/P5	488.95×622×365.125
3810/630/HC	630×920×515	381040X2	200×310×200	3806/530	530×880×544
3810/630	630×920×515	381050X2/YA	250×460×270	3806/530/C2	530×880×544
3810/630/C2	630×920×515	381050X2	250×460×270	3806/530/C3	530×880×544
3810/670	670×980×540	381056X2	280×420×250	3806/600	600×980×650
3810/710	710×1030×555	381088X2/YA	440×650×353	3806/650	640×1030×560
3810/710/C2	710×1030×555	381088X2/YB2	440×650×355	3806/650/YA	640×1030×560
3810/750	750×1090×605	381088X2E/YB2	440×650×355	3806/650/YA5	640×1030×560
3810/750/C2	750×1090×605	381088X2/HC	440×650×355	3806/650/C9	640×1030×560
382028	140×210×185	381088X2/C9YB2	440×650×355	3806/650/C2	640×1030×560
382024	170×260×230	381088X2/C2YB2	440×650×355	3806/650/HCC9	640×1030×560
382034/S0	170×260×230	381052X2	260×400×225	3806/660	660×1070×650
382034/C2	170×260×230	381052X2/C2	260×400×225	3806/660/C2	660×1070×650
382040	200×310×275	381052X2/C3	260×400×225	779/710	710×900×410
3806/750/C2	750×1130×690	382052X2	260×400×255	E779/710	710×900×410
				3806/750	750×1130×690

Category Overview

Tapered Roller Bearings are separable rolling element bearings designed to withstand combined radial and axial loads simultaneously. Featuring tapered inner and outer raceways and tapered rollers, these bearings offer high load capacity, high rigidity, and precise axial positioning, making them ideal for applications requiring heavy loads, impact resistance, and accurate shaft alignment.Our tapered roller bearing range covers single-row, double-row, and four-row configurations, with metric and inch sizes available, suitable for automotive, industrial machinery, mining, metallurgy, and other heavy-duty industries.

Our Series Breakdown

We provide a full range of tapered roller bearing series to meet diverse load, speed, and application requirements:

Series	Configuration	Key Features	Typical Applications
30200 Series	Single Row	Standard design, medium load capacity, cost-effective	Automotive wheel hubs, gearboxes, small reducers
30300 Series	Single Row	Medium-heavy load, high rigidity, wide application	Industrial gearboxes, agricultural machinery, construction equipment
32200 Series	Single Row	Thickened section, enhanced radial load capacity	Truck axles, heavy gearboxes, mining machinery
32300 Series	Single Row	Heavy-duty design, maximum radial/axial load capacity	Large reducers, crushers, construction machinery
31300 Series	Single Row	Large contact angle, high axial load capacity	Pump units, compressors, high-thrust applications
33000/33100/33200 Series	Single Row	Compact structure, automotive-optimized	Passenger car/hub bearings, differential gears
Double Row Tapered Roller Bearings	Double Row	High combined load capacity, self-aligning option	Heavy gearboxes, rolling mills, crane wheels
Four Row Tapered Roller Bearings	Four Row	Ultra-high load capacity, separable design	Cold/hot rolling mills, heavy industrial equipment

Core Advantages

High Combined Load Capacity: Effectively bear heavy radial loads and bidirectional axial loads simultaneously.
Separable Design: Inner and outer rings can be installed separately, simplifying assembly and disassembly.
High Rigidity & Impact Resistance: Suitable for harsh working conditions with shock loads and vibration.
Precise Axial Positioning: Accurately control shaft axial play, ideal for precision transmission systems.
Wide Compatibility: Available in multiple series and sizes, covering automotive, industrial, and heavy machinery applications.

Typical Industrial Applications

Widely used in automotive wheel hubs, gearboxes, reducers, mining equipment, crushers, rolling mills, agricultural machinery, construction machinery, pumps, compressors, and other heavy-duty mechanical transmission systems.

PRODUCT TESTING

Bearing Forging

Bearing Annealing

Turning Process

Quenching

Bearing Assembly

Bearing Clearance Testing

Grease injection

Bearing Marking

Tapered Roller Bearings