Products for Steel Production Equipment High-performance Product Series For Steel Production/Rolling Equipment JTEKT CORPORATION

JTEKT… Utilizing comprehensive strengths to manufacture products that respond to steel production equipment needs and support stable operations. Steel production equipment are operated in extremely harsh environments, where machinery is exposed to high temperatures, water and mill scale. The bearings used in this equipment must continually withstand heavy loads and high-speed rotation. These conditions test not only each bearing, but also the overall strengths of peripheral parts and the integration thereof. As a general manufacturer of bearings, drive shafts and oil seals, JTEKT is a full- service...

History of JTEKT products for steel production equipment Steel manufacturer trends Drive shafts Developed four-row tapered roller bearings for hot-strip mill work rolls Domestic production of bearings for rolling mills Catch-up with industry overseas WWII Post-WWII Social conditions /events Developed tapered roller bearings for hot-strip mill backup rolls Introduction to products for steel production equipment Sprocket wheel Introduction of overseas Drive shaftstechnologies; domestic production Cylindrical roller bearing with aligning ring (free side) Entered agreement with Sendzimir Japan, Ltd....

Steel production equipment Products for rolling mills Bearings for multi-roll mills Round type drive shaft Chock seals Block type drive shaft Three-row cylindrical roller bearings Four-row cylindrical roller bearings Sealed type four -row tapered roller bearing Double-row tapered roller bearing Four-row tapered roller bearing (45D) Sealed type double-row cylindrical roller bearings Backup roll assembly Steel strip in coil Skin-pass mill Cold strip mills Tension leveler Hot finishing rolling mill Stainless steel in coil Magnetic steel in coil Slab Multi-roll mills Shaped-steel rolling mill Plate...

Steel production equipment Products for continuous casting machines Offering long-life bearings for systems, we manufacture bearings for continuous casting equipment, bearing housing units, oil/air lubrication devices, oil seals and other products. Measures for high loads Measures for ultralow-speed rotation and water / mill-scale intrusion High-load type spherical roller bearings Required performance and issues Designed for maximum load rating; internal design reduces contact stress Service life Measures for ultralow-speed rotation, which is unfavorable for lubrication Conventional bearing Grease...

Bearings for sintering machine pallet car Sintering machines are used in harsh environments where high temperatures and large amounts of dust are generated. We provide sealed bearings and mill-scale seals capable of withstanding these kinds of environments. Required performance and issues Measures for heavy load / shock load Preventing intrusion of dust Measures for heavy loads / shock loads Preventing the intrusion of dust Pressure roller bearings (sealed type double row cylindrical roller bearings) Features Optimized outer ring thickness and carburized steel adopted Capable of withstanding...

Steel production equipment Rolling Mill Product Line-up Long-life, highly corrosion-resistant JHS is driving innovations in steel production equipment. Iron manufacturing and rolling mill lines must operate continuously while maintaining high reliability in severe production environments. Answering these needs through the realization of epoch-making long-life and high corrosion resistance is JTEKT Hyper Strong (JHS). By adopting newly developed materials and processes for bearing steel, seal materials and other components, we have realized a 2-to-4-fold increase in bearing service life compared...

Steel production equipment Bearings for roll necks Rolling mill water and mill-scale intrusion Bearings used to steel mill roll necks must cope with heavy loads and high-speed rotation in severe environments. In order to respond to these needs, JTEKT works daily to resolve related issues such as developing bearing materials and improving bearing seal performance. Lubricating oil oil-film strength reduced Required performance and issues High-speed rotation, heavy load Rolling fatigue of material Surface-initiated flaking Subsurface-initiated flaking Enhancing durability and service life under...

Steel production equipment Bearings for multi-roll mill backup rolls We provide high-precision bearings with excellent durability based on long years of experience and achievements. Longer inner ring rolling fatigue service life Improving outer ring rotational accuracy Improving outer ring durability Bearings for forced oil lubrication Required performance and issues Seal structure that maintains a favorable lubricated state Improving outer ring durability Longer inner ring rolling fatigue service life Improving outer ring rotational accuracy Outer ring with both high rigidity and durability...

Steel production equipment Drive shafts for rolling mills Contributing to stronger, longer-life drive shafts 1 Required performance and issues Optional mechanisms supporting drive shafts for rolling mill Application of different diameter rollers for cross & bearing Stronger, longer-life drive shafts capable of handling increased rolling torque Roller diameter at the end of the cross reduced slightly Uniform multi-row roller load Unequal loads Heaviest at cross end Equal loads Load distribution Bearing cup Longer service life Stronger, longer-life drive shafts for use with smaller rolling-mill...

Bearing units for plate levelers We provide plate leveler units to cope with severe usage environments such as heavy loads, rust and the intrusion of water / foreign matter. Required performance and issues Stable operation under heavy load High corrosion resistance Prevent the intrusion of water / foreign matter Bearing units for plate levelers Roll strength and bearing load rating improved as the result of integrating the roll and outer ring structure Special stainless steel for rolls developed Seal and shield are combined to form a labyrinth structure that has excellent sealing performance...