Products

Timken now offers a broader range of full complement cylindrical roller bearings to meet the need for increased radial load carrying capacity by maximizing the number of rollers in a given envelope. The expanded offering includes multiple series of one-row and two-row designs starting at 100 mm bore. Size range: 100 mm bore to 2000 mm OD Design Attributes Designed to ISO/DIN specified interchangeable boundary dimensions where available. Sold as a completely unitized assembly. Both single row and double row products available in same size range. Standard designs use NCF, NNCF nomenclature. Full complement construction, no cage included. High capacity, but operating speed may be an issue requiring close application scrutiny. Assembly outer ring design provides significant internal axial float capability. Applications Gear Drives Crop Shears Rolling Mills General Industrial

Size range: 100 mm bore to 2000 mm OD Design Attributes Designed to ISO/DIN specified interchangeable boundary dimensions where available. Sold as a completely unitized assembly. Both single row and double row products available in same size range. Standard designs use NCF, NNCF nomenclature. Full complement construction, no cage included. High capacity, but operating speed may be an issue requiring close application scrutiny. Assembly outer ring design provides significant internal axial float capability. Applications Gear Drives Crop Shears Rolling Mills General Industrial

Four-row cylindrical bearings are almost exclusive to metals industry and carry heavy radial loads in steel, aluminum and other metal rolling mills. Size Range: 145 mm to 1040 mm Bore. Design Attributes Design offers very high radial load capacity. No thrust capacity. Straight and tapered bores available. Inner races are interchangeable with outer assemblies. Applications Back-up rolls Work rolls Cement crushing

Two-row, or double-row, cylindrical bearings are designed for additional strength in carrying radial loads. These bearing types are interchangeable so the dimensions and diameter under the rollers (NNU style) and diameter over the rollers (NN style) are held to an ISO/DIN standard. Interchangeability is designed for the ring without the rollers to allow interchange with competitor inner rings. Size range: 80 mm to 2000 mm OD Design Attributes Designed to ISO/DIN specified interchangeable dimensions where available. Sold as complete assembly. Available in same size range as single row product. Current designs use NN, NNU nomenclature. Standard cage design is a drilled pocket, finger-style bronze retainer. Applications Gear Drives Crop Shear Rolling Mills Machine Tools

Cylindrical bearing type NUP has a double ribbed outer ring and a single-ribbed inner ring with an abutting loose rib, which allows the bearing to provide axial location and to carry light thrust loads in both directions. Factors governing radial and thrust load capacities are the same for type NJ. Size range: 80 mm to 2000 mm OD Design Attributes Design features an outer ring with two integral ribs and an inner ring with a single rib. Features an abutting loose rib. Carries light thrust loads in both directions. Provides axial location. May be used with RN or RU bearing to accommodate axial expansion/contraction. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilns Power generation equipment such as pulverizers, gearboxes and gear drives Oilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives

Cylindrical bearing type NP has a double-ribbed inner ring and a single-ribbed outer ring with an abutting loose rib, which allows the bearing to provide axial location and to carry light thrust loads in both directions. Factors governing radial and thrust load capacities are the same for Types NJ. Size range: 80 mm to 2000 mm OD Design Attributes Design features an inner ring with two integral ribs and an outer ring with a single rib. Features an abutting loose rib. Carries light thrust loads in both directions. Provides axial location. May be used with RN or RU bearing to accommodate axial expansion/contraction. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilns Power generation equipment such as pulverizers and gearboxes and gear drives Oilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives

Cylindrical bearing type NF has single-ribbed outer and double-ribbed inner rings and can support heavy radial loads, as well as light unidirectional thrust loads up to 10 percent of the radial load. The thrust load is transmitted between the diagonally opposed rib faces in a sliding rather than a rolling motion. Size range: 80 mm to 2000 mm OD Design Attributes Design features outer ring with one integral rib and an inner ring with two ribs. Supports heavy radial and light unidirectional thrust load up to 10 percent of radial load. Angle ring can be used to turn a floating bearing into a fixed one. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilns Power generation equipment such as pulverizers, gearboxes, and gear drives Oilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives

Cylindrical bearing type NJ has double-ribbed outer and single-ribbed inner rings and can support heavy radial loads, as well as light unidirectional thrust loads up to 10 percent of the radial load. The thrust load is transmitted between the diagonally opposed rib faces in a sliding rather than a rolling motion. Size range: 80 mm to 2000 mm OD Design Attributes Design features outer ring with two integral ribs and an inner ring with a single rib. Supports heavy radial and light unidirectional thrust load up to 10 percent of radial load. Angle ring can be used to turn a floating bearing into a fixed one. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilns Power generation equipment such as pulverizers and gearboxes and gear drives Oilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives

These bearings carry radial load only and can accommodate both expansion and contraction. The relative axial displacement of one ring to the other occurs with minimum friction while the bearing is rotating. Type N bearings may be used in one or two positions for shaft support if other means of axial location are provided. The outer ring has a cylindrical bore without ribs and the inner ring incorporates two ribs. Size range: 80 mm to 2000 mm OD Design Attributes Design has a cylindrical outer ring and two ribs on the inner ring, making type N bearings well suited for use as floating bearings. Separable components simplify mounting and removal. Accommodates axial expansion and contraction. Provides axial displacement between rings with minimum friction while rotating. Supports heavy radial loads. Not suitable for applications with thrust loads. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilns Power generation equipment such as pulverizers, gearboxes and gear drives Oilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives

Timken offers standard and specially designed single-row cylindrical roller bearings in a wide range of configurations and series for your application requirements. Our EJ series steel cage bearings available in 65-150 mm bore sizes, are part of our offering that includes brass cage and full-complement cylindrical roller bearings. Size range: 65 to 150 mm OD Design Attributes Available in brass cage, steel cage and full-complement designs Dimensionally interchangeable industry-standard mounted bearings from 65 mm to 1,200 mm High load carrying capacity resulting from proprietary profiles and optimized raceway surfaces Smooth surfaces reduce friction and lower operating temperatures to promote longer bearing life. Key Applications Gear drives -Helical industrial gearboxes -Planetary gearboxes -Geared motors Pumps Compressors Electric motors Centrifuges Chart / Table Cylindrical Roller Bearing Series Cage Type Dimensions Series Designs Size Range Cage Construction EJ 2, 3, 22, 23 NU, NJ 65 mm to 150 mm bore Stamped steel EMA 2, 3, 22, 23 N, NU, NJ, NUP 65 mm to 400 mm bore Machined brass NCF 29 NCF 65 mm to 800 mm bore Full complement NCF 18 NCF 150 mm to 1050 mm bore Full complement

A wide variety of bearing types and design variations are available to meet the requirements of virtually all precision instrument applications. Bearing types include radial retainer, pivot, thrust, high speed radial, angular contact and full ball complement. Many selections also are available in both inch and metric dimensions. Design Attributes Extended inner rings and flanged outer rings to facilitate mounting. Shields and seals for contamination protection. Radial play and contact angle variations to suit application loading and deflection requirements Various ball retainer styles and materials for optimum bearing performance. Factory lubrication from a stock of several hundred lubricants. Tolerance levels to exact application requirements. Ring and ball selection choices include AISI 440C stainless steel, SAE 52100 chrome steel, beryllium copper and ceramics. Performance testing for noise and friction torque specifications available. Applications Medical and industrial handpieces Flow meters Fuel controls Gyros, synchros and servos Motors Cryogenic coolers Pulmonary assist devices