Sealed type,Four row tapered roller bearings (Replace NTN)

Update date: 2020-03-10 00:18�� Attention: | Inquiry entry: sales@fv-bearing.com

CROU··LL series (Sealed type, Four-Row Tapered Roller Bearings)

Sealed Four Row Tapered Roller Bearings for Rolling Mill Roll-Necks The CROU··LL series sealed four row tapered roller bearings are new standard series products especially developed to satisfy the “high load capacity”, “high load resistance performance” and “high sealing performance” required for steel mill roll-neck applications and to improve reliability through long life design. Our FV named it S4T series. Our premium quality four-row sealed bearings are designed to operate at high speeds and withstand harsh environments, even while carrying heavy loads.

Built with highly rated FV tapered roller bearings, our sealed roll neck bearings are expected to provide a lower cost of ownership due to less required maintenance and longer bearing life. FV case-carburized, high-capacity tapered roller bearings offer durable toughness.

The newest sealed roll neck bearing is the integrated seal design that exemplifies our focus on advancing technology for the metals industry. Also available are the seal carrier design, many special designs and custom designs.

Size range:

ID: 140.000 mm to 771.200 mm (7.6772 in. to 28.2500 in.)

OD: 270.000 to 946.150 mm (10.6300in. to 37.2500 in.)

Design Attributes:

Four single cups for optimum load sharing.
Cup spacers available with or without lube groove and holes.
Improved surface finishes to enhance lubrication performance.
Inboard and outboard cone face slots that reduce cone face wear.
Spiral bore grooves with blended radii to eliminate roll neck damage.
Case-carburized components to improve toughness and increase fatigue life.
Patented seal designs with improved contact geometry for enhanced sealing.
Enhanced roller profiling for even load distribution, which reduces edge stress.
No central cone or cup spacers to minimize number of components to be handled.
Effective sealing at cup outer diameter (OD) to seal contaminants away from bearing OD and chock bore.

Applications:

Rolling mills

FV bearing code	d	D	B	C	Mass （Kg）	Replace NTN code ( Ultage-CROULL )
S4T-CRO-2810LL	140	198	174	174	16	CRO-2810LL** Sealed type, Four row tapered roller bearings
S4T-CRO-2812LL	140	198	174	174	15.5	CRO-2812LL** Sealed type, Four row tapered roller bearings
S4T-CRO-4022LL	200	282	206	206	39	CRO-4022LL** Sealed type, Four row tapered roller bearings
S4T-CROU-4401LLA1X	220	295	315	315		CROU-4401LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-4424LL	220	295	315	315	57.5	CRO-4424LL** Sealed type, Four row tapered roller bearings
S4T-CRO-4427LL	220	310	280	280	63.5	CRO-4427LL** Sealed type, Four row tapered roller bearings
S4T-CRO-4436LL	220	320	290	290	77	CRO-4436LL** Sealed type, Four row tapered roller bearings
S4T-CROU-4501LLA1X	225	320	230	230		CROU-4501LLA1X** Sealed type, Four row tapered roller bearings
S4T-CROU-4801LLA1X	240	338	248	248		CROU-4801LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-4811LL	240	338	248	248	67.8	CRO-4811LL** Sealed type, Four row tapered roller bearings
S4T-CROU-4802LLA1X	240	338	340	340		CROU-4802LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-4817LL	240	338	340	340	94.4	CRO-4817LL** Sealed type, Four row tapered roller bearings
S4T-CRO-4906LL	245	345	310	310	90.5	CRO-4906LL** Sealed type, Four row tapered roller bearings
S4T-CROU-5001LLA1X	250	365	270	270		CROU-5001LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-5015LL	250	365	270	270	90	CRO-5015LL** Sealed type, Four row tapered roller bearings
S4T-CROU-5201LLA1X	260	365	340	340		CROU-5201LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-5224LL	260	365	339	339	103	CRO-5224LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5660LL	280	380	290	290	90	CRO-5660LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5665LL	280	395	290	290	108	CRO-5665LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5664LL	280	395	340	340	126	CRO-5664LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5639LL	280	410	268	268	116	CRO-5639LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5709LL	285	400	340	340	134	CRO-5709LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5814LL	290	400	346	346	129	CRO-5814LL** Sealed type, Four row tapered roller bearings
S4T-CROU-6001LLA1X	300	420	310	310		CROU-6001LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-6038LL	300	400	254	254	84.6	CRO-6038LL** Sealed type, Four row tapered roller bearings
S4T-CRO-6042LL	300	420	310	310	128	CRO-6042LL** Sealed type, Four row tapered roller bearings
S4T-CRO-6031LL	300	430	295	305	136	CRO-6031LL** Sealed type, Four row tapered roller bearings
S4T-CROU-6201LLA1X	310	430	350	350		CROU-6201LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-6220LL	310	430	310	310	133	CRO-6220LL** Sealed type, Four row tapered roller bearings
S4T-CRO-6222LL	310	430	350	350	150	CRO-6222LL** Sealed type, Four row tapered roller bearings
S4T-CRO-6426LL	320	480	360	360	228	CRO-6426LL** Sealed type, Four row tapered roller bearings
S4T-CRO-7109LL	355	490	316	316	159	CRO-7109LL** Sealed type, Four row tapered roller bearings
S4T-CRO-7226LL	360	480	375	375	180	CRO-7226LL** Sealed type, Four row tapered roller bearings
S4T-CROU-8201LLA1X	410	546	400	400		CROU-8201LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-8204LL	410	546	400	400	253	CRO-8204LL** Sealed type, Four row tapered roller bearings
S4T-CRO-8412LL	420	620	395	320	384	CRO-8412LL** Sealed type, Four row tapered roller bearings
S4T-CROU-8801LLA1X	440	590	480	480		CROU-8801LLA1X** Sealed type, Four row tapered roller bearings
S4T-CROU-8802LLA1X	440	620	454	454		CROU-8802LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-8830LL	440	590	480	480	358	CRO-8830LL** Sealed type, Four row tapered roller bearings
S4T-CRO-8832LL	440	620	454	454	426	CRO-8832LL** Sealed type, Four row tapered roller bearings
S4T-CROU-10601LLA1X eg	530	780	570	570		CROU-10601LLA1X eg** Sealed type, Four row tapered roller bearings
S4T-CRO-10607LL	530	715	590	590	700	CRO-10607LL** Sealed type, Four row tapered roller bearings
S4T-CRO-4303LL	216.103	330.2	263.525	269.875	78.2	CRO-4303LL** Sealed type, Four row tapered roller bearings
S4T-CROU-4402LLA1X	220.662	314.325	239.712	239.712		CROU-4402LLA1X** Sealed type, Four row tapered roller bearings
S4T-CROU-5101LLA1X	254	358.775	269.875	269.875		CROU-5101LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-5117LL	254	358.775	269.875	269.875	83	CRO-5117LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5116LL	254	358.775	269.875	269.875	81.7	CRO-5116LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5227LL	260.35	422.275	314.325	317.5	177	CRO-5227LL** Sealed type, Four row tapered roller bearings
S4T-CRO-5652LL	279.4	393.7	269.875	269.875	96.4	CRO-5652LL** Sealed type, Four row tapered roller bearings
S4T-CRO-6143LL	304.648	438.048	280.99	279.4	136	CRO-6143LL** Sealed type, Four row tapered roller bearings
S4T-CROU-6101LLA1X	304.902	412.648	266.7	266.7		CROU-6101LLA1X** Sealed type, Four row tapered roller bearings
S4T-CROU-6901LLA1X	343.052	457.098	254	254		CROU-6901LLA1X** Sealed type, Four row tapered roller bearings
S4T-CROU-6902LLA1X	343.052	457.098	299	299		CROU-6902LLA1X** Sealed type, Four row tapered roller bearings
S4T-CRO-6930LL	343.052	457.098	254	254	105	CRO-6930LL** Sealed type, Four row tapered roller bearings
S4T-CRO-6920LL	343.052	457.098	254	254	107	CRO-6920LL** Sealed type, Four row tapered roller bearings
S4T-CRO-6936LL	343.052	457.098	299	299	130	CRO-6936LL** Sealed type, Four row tapered roller bearings
S4T-CRO-9107LL	457.2	596.9	276.225	279.4	192	CRO-9107LL** Sealed type, Four row tapered roller bearings
S4T-CRO-9610LL	479.425	679.45	495.3	495.3	565	CRO-9610LL** Sealed type, Four row tapered roller bearings
S4T-CRO-9725LL	482.6	615.95	330.2	330.2	225	CRO-9725LL** Sealed type, Four row tapered roller bearings
S4T-CROU-10001LLA1X	501.65	711.2	520.7	520.7		CROU-10001LLA1X** Sealed type, Four row tapered roller bearings
S4T-CROU-11901LLA1X eg	595.312	844.55	615.95	615.95		CROU-11901LLA1X eg** Sealed type, Four row tapered roller bearings
S4T-CRO-11919LL	595.312	844.55	615.95	615.95	1130	CRO-11919LL** Sealed type, Four row tapered roller bearings
S4T-CRO-14214LL	711.2	914.4	387.35	387.35	616	CRO-14214LL** Sealed type, Four row tapered roller bearings
S4T-CRO-14209LL	711.2	914.4	410	410	596	CRO-14209LL** Sealed type, Four row tapered roller bearings

STRENGTH WHERE IT COUNTS

Flat product rolling mills require wellengineered bearings that can operate at high speeds and withstand harsh environments, all while carrying heavy loads. At the same time, there’s constant pressure to increase productivity while reducing costs.

For more than 20 years, FV has provided high-quality bearings for rigorous applications in hot and cold rolling mills, while continuously improving the company’s bearings and seals to keep pace with the demands of the metals industry.

FV engineering experience and know-how are reflected in the newest sealed roll neck bearing design. It offers industry-leading tapered roller bearing design, combined with advanced proprietary sealing solutions to reduce contamination ingress and extend bearing life, expected to result in a lower cost-per-ton-rolled for mill operators.

IMPROVED MAIN SEAL DESIGN CAN SIGNIFICANTLY BOOST PERFORMANCE

Contaminants and water ingress can reduce bearing life and excessive grease loss can lead to increased maintenance costs or strip staining. FV technologists developed new, innovative seals that can address these operating concerns with a design that’s also easy for the maintenance professional to use, resulting in the integrated main seal design.

Leveraging 15 years of seal development expertise, FV costs or strip staining. technologists developed created innovative sealing solutions that may provide major benefits to mill operators, including:

• Longer bearing life due to improved sealing against water and contaminant ingress and maximum bearing load rating within the envelope.

• Potential for extended maintenance intervals due to reduced grease loss and contamination ingress.

• Lower cost of ownership due to less required maintenance and longer bearing life.

• Easy-to-assemble seals that reduce bearing maintenance time.

ENGINEERED FOR RELIABILITY UNDER HARSH CONDITIONS

Mill operators depend on high-performance bearings to keep their operations running smoothly. The FV roll neck bearing with an integrated seal can handle difficult working conditions, including high temperatures and speeds, as well as heavy shock loads and misalignment.

• Enhanced sealing due to high-performance seal designs with improved contact geometry.

• Improved performance in marginal lubrication due to better surface finishes.

• Misalignment accommodated by enhanced roller profiling for uniform load distribution.

• Increased toughness and fatigue life from case-carburized components.

• Improved load sharing provided by four single cups.

• Reduced cone face wear due to inboard and outboard cone face slots

• Reduced potential for roll neck damage due to spiral bore grooves with blended radii that provide lubricant access to the roll neck.

• Fewer components to handle due to advanced integrated design with no center spacers or seal carriers.

• More effective exclusion of contaminants from the chock bore due to sealing at cup outer diameter.

OPTIONAL FEATURES

PRE-GREASED ASSEMBLY: Bearings can be supplied as pre-greased assemblies. Several grease options are available, including FV Premium Mill grease, which is known for its excellent resistance to water washout. FV sealed roll neck bearings and seals are designed to work with different types of oil lubrication systems, as well. Contact your FV engineer for assistance with grease type, fill recommendations and applications in oil-lubricated systems.

SOLID CUP SPACERS: The standard sealed bearing can be re-lubricated in the chock through the holes in the cup spacers. For chocks which are not configured with lubrication lines, the sealed bearing can be provided with solid cup spacers.

CENTER DOUBLE CUP: The standard sealed bearing design contains four single cups; however, a double cup version is available upon request.