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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

CROU路路LL series (Sealed type, Four-Row Tapered Roller Bearings) rolling mill bearings


FV bearing code d D B C Mass
锛圞g锛
 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.

FV sealed Design, 4-ROW TAPER ROLLER BEARING TIMKEN