Division 01 · Industrial Bearings

Precision industrial
bearing solutions.

Fourteen bearing families, over 1,050 catalogued designations. Manufactured from SAE 52100 chrome bearing steel, hardened to 60 ± 2 HRC and finished across an eleven-stage process under an ISO 9001 quality system — from 50 mm to 500 mm outside diameter.

1300+

Bearing types

259+

Dealers

15+

Countries served

25+

Years of experience

Product Range · Catalogue Edition 01

Fourteen families.
One engineering standard.

Every family below is reproduced from the JMC bearing catalogue with its original product photography, technical data and application scope.

Family · 01221 designations

Tapered Roller Bearings

Single-row tapered roller bearings with separable cup and cone assemblies, engineered to carry combined radial and axial loads in one direction. Metric 302, 303, 313, 320, 322, 323, 329, 330, 331 and 332 series are complemented by a full programme of inch-series automotive and heavy-vehicle references.

Features

Separable design for simple mounting and clearance setting
Optimised roller-to-flange geometry for high load capacity
Case-carburised raceways, superfinished for low friction
Matched cup and cone sets, 100% dimensionally inspected

Technical specifications

Bearing type: Single row tapered roller, separable
Series covered: 302 / 303 / 313 / 320 / 322 / 323 / 329 / 330 / 331 / 332 / 331D
Inch series: Automotive and heavy-vehicle references
Cage: Pressed steel (CRC), brass on request
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC, inner and outer rings and rollers
Internal clearance: Set at mounting; C0 / C3 on request
Contact angle: Nominal 10° – 30° by series

Applications

Wheel hubs, gearboxes, axles, differentials, transmission shafts, rolling mills, construction and agricultural machinery.

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Family · 02146 designations

Spherical Roller Bearings — Steel Cage

Double-row self-aligning spherical roller bearings with pressed steel cage, designated CC. The common sphered outer raceway compensates for shaft deflection and mounting misalignment while carrying very high radial and moderate axial loads in both directions.

Features

Self-aligning: accommodates static and dynamic misalignment
W33 annular groove and three lubrication holes in the outer ring
C3 internal clearance as standard for thermal expansion
K variant with 1:12 tapered bore for adapter-sleeve mounting

Technical specifications

Bearing type: Double row spherical roller, self-aligning
Series covered: 213 / 222 / 223 / 230 / 231 / 232 / 239 / 240
Cage: Pressed steel, window type (CC)
Lubrication: W33 groove with three radial holes
Clearance: C3 standard
Bore: Cylindrical; K = 1:12 taper
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Vibrating screens, crushers, conveyors, fans, gearboxes, paper mills, cement plants and general heavy industry.

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Family · 0322208 EW33C3 – 22222 EW33C3 · 22310 EW33C3 – 22320 EW33C3

Spherical Roller Bearings — E-Type Cage

Reinforced E-design spherical roller bearings offering a larger complement of longer rollers within the same boundary dimensions, raising dynamic load rating and service life in continuously loaded applications.

Features

Increased roller length and count for higher load rating
Robust one-piece cage design for high-vibration duty
Interchangeable envelope with standard 222 / 223 series
Optimised osculation for reduced operating temperature

Technical specifications

Bearing type: Double row spherical roller, E design
Ranges: 22208 EW33C3 to 22222 EW33C3; 22310 EW33C3 to 22320 EW33C3
Cage: Reinforced steel, E design
Lubrication: W33 groove with three radial holes
Clearance: C3 standard
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Crushers, screens, mixers, mill drives and other high-vibration, continuously loaded machinery.

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Family · 04237 designations

Spherical Roller Bearings — Brass Cage

Large-section spherical roller bearings with a machined brass cage, designated MB, and the ACMA execution for the heaviest duty. The brass cage withstands high speeds, shock loading, elevated temperature and marginal lubrication conditions.

Features

Machined brass cage for shock load and high-temperature duty
Full programme up to 500 mm outside diameter
K and K30 tapered-bore variants for withdrawal-sleeve mounting
C3 / C4 clearance available on ACMA executions

Technical specifications

Bearing type: Double row spherical roller, self-aligning
Series covered: 222 / 223 / 230 / 231 / 232 / 240 / 241
Cage: Machined brass, roller guided (MB / CA / ACMA)
Bore: Cylindrical; K = 1:12 taper; K30 = 1:30 taper
Clearance: C3 standard, C4 on request
Lubrication: W33 groove with three radial holes
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Rolling mills, stone crushing plant, cement mills, marine drives, power generation, heavy gearboxes and mining equipment.

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Family · 0521 designations

Spherical Roller Thrust Bearings

Single-row spherical roller thrust bearings of the 294 M series, designed for very high axial load capacity combined with self-alignment. The asymmetric rollers run on a sphered housing washer, allowing the shaft washer to align freely.

Features

Very high axial load carrying capacity
Self-aligning sphered housing washer
Machined brass cage (M) for shock and high-speed duty
Accommodates simultaneous radial load up to 55% of axial load

Technical specifications

Bearing type: Single row spherical roller thrust
Series covered: 294 M series, 29412 M to 29452 M
Cage: Machined brass (M)
Contact: Asymmetric rollers on sphered raceway
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Vertical shafts, extruders, crane hooks, propeller shafts, hydro turbines, presses and heavy vertical mill drives.

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Family · 06

BS2-2RS Sealed Spherical Roller Bearings

Sealed spherical roller bearings with contact seals on both sides, factory filled with grease. The sealed execution protects the rolling contact from dust, water and abrasive media in contaminated environments and removes the need for relubrication.

Features

Contact seals both sides, grease filled for life
Protection against dust, moisture and abrasive contamination
Reduced maintenance and extended relubrication intervals
Self-aligning double-row spherical roller geometry

Technical specifications

Bearing type: Sealed double row spherical roller
Designation: BS2-2RS execution
Sealing: Contact seal both sides (2RS)
Lubrication: Factory grease filled
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Stone crushing plant, vibrating screens, conveyors, agricultural machinery and outdoor equipment exposed to contamination.

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Family · 07241 designations

Cylindrical Roller Bearings

Single and double-row cylindrical roller bearings in N, NU, NJ, NUP, NF and NN executions. Line contact between roller and raceway gives very high radial load capacity and permits high rotational speeds; separable designs allow axial displacement of the shaft.

Features

N and NU designs allow free axial displacement
NJ, NF and NUP designs locate the shaft in one or both directions
NN double-row precision execution with tapered bore (K)
Machined brass cage (M) available across the range

Technical specifications

Bearing type: Cylindrical roller, single and double row
Executions: N / NU / NJ / NF / NUP / NN
Series covered: 2, 3, 4, 10, 22, 23 dimension series
Cage: Pressed steel or machined brass (M)
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC
Clearance: C0 / C3 as required

Applications

Electric motors, traction motors, machine tool spindles, gearboxes, rolling mills, pumps and railway axle boxes.

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Family · 08

Needle Roller Bearings

Needle roller bearings with brass and steel cages, using long, small-diameter rollers to deliver high radial load capacity within a minimal radial section height, where space envelope is the governing design constraint.

Features

Very high load capacity in a compact radial section
Brass and steel cage executions
Low sectional height for space-critical assemblies
Precision-ground and superfinished raceway surfaces

Technical specifications

Bearing type: Needle roller, caged
Cage: Brass and steel cage executions
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC
Finish: Honed and lapped raceways

Applications

Transmissions, universal joints, pumps, compressors, automotive assemblies and industrial machinery with restricted space.

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Family · 09108 designations

Deep Groove Ball Bearings

Single-row deep groove ball bearings of the 60, 62 and 63 series in open, shielded (ZZ), sealed (2RS), snap-ring (N) and ZN executions. Deep uninterrupted raceway grooves carry radial and bi-directional axial loads at high speed with low friction.

Features

Open, ZZ shielded, 2RS sealed, N and ZN executions
Low noise and vibration, verified on a noise and vibration tester
High speed capability with low frictional moment
Riveted steel cage, brass cage on request

Technical specifications

Bearing type: Single row deep groove ball
Series covered: 60, 62, 63 series
Executions: Open / ZZ / 2RS / N / ZN
Cage: Pressed steel ribbon cage
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Electric motors, pumps, fans, appliances, agricultural equipment, automotive ancillaries and general machinery.

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Family · 1031 designations

Self-Aligning Ball Bearings

Double-row self-aligning ball bearings of the 12 and 13 series with a sphered outer raceway. The design tolerates shaft misalignment and deflection while generating exceptionally low friction, and is offered with cylindrical or 1:12 tapered (K) bore.

Features

Sphered outer raceway compensates for misalignment
Lowest friction of all rolling bearing types
K execution with 1:12 tapered bore for sleeve mounting
Two rows of balls on a common sphered raceway

Technical specifications

Bearing type: Double row self-aligning ball
Series covered: 12 and 13 series
Bore: Cylindrical or 1:12 taper (K)
Cage: Pressed steel or polyamide
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Textile machinery, conveyors, agricultural equipment, fans, woodworking machinery and long shafting with deflection.

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Family · 1130 designations

Angular Contact Ball Bearings

Angular contact ball bearings of the 32 and 33 series, together with sealed double-row 52 executions. The raceways are displaced relative to one another along the bearing axis so that combined radial and axial loads are carried at a defined contact angle.

Features

Double-row 32 and 33 series for combined loading
Sealed 2RS executions factory filled with grease
Rigid bearing arrangement with axial location in both directions
Precision-ground contact angle for controlled stiffness

Technical specifications

Bearing type: Angular contact ball, single and double row
Series covered: 32, 33 and 52 (2RS) series
Sealing: Open and 2RS sealed executions
Cage: Pressed steel or machined brass
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Pumps, compressors, gearboxes, machine tools, water pumps and applications requiring rigid axial location.

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Family · 1221 designations

Thrust Ball Bearings

Single-direction thrust ball bearings of the 511 and 512 series, comprising a shaft washer, a housing washer and a ball and cage assembly. They are designed for purely axial loads acting in one direction and are separable for easy mounting.

Features

Separable construction: washers and cage assembly
High axial load capacity in one direction
Series 511 and 512 covering a broad size programme
Ground and superfinished washer raceways

Technical specifications

Bearing type: Single direction thrust ball
Series covered: 511 and 512 series (51104 to 51228)
Construction: Shaft washer, housing washer, ball and cage assembly
Load direction: Axial, one direction only
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC

Applications

Vertical shafts, machine tool tables, crane hooks, pumps and gear drives with pure axial loading.

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Family · 13

Special Types of Bearings

Customised bearings manufactured to customer drawing, sample or performance specification, including housed units, clutch release assemblies, hub units, sleeve-mounted assemblies and non-standard envelopes for original equipment programmes.

Features

Manufactured to customer drawing, sample or design
Non-standard envelopes and special internal geometry
OEM development support from prototype to series supply
Full material and dimensional traceability

Technical specifications

Bearing type: Custom and application-specific executions
Development basis: Customer drawing, sample or specification
Ring material: SAE 52100 / Gcr15 chrome bearing steel
Hardness: 60 ± 2 HRC
Quality system: ISO 9001 quality management system

Applications

Original equipment programmes across automotive, agricultural, industrial and power transmission applications.

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Bearing Anatomy

Four components. Zero compromise.

Common technical data applied across every family in the catalogue.

Outer ring

Sphered or grooved raceway, ground and superfinished. W33 lubrication groove available.

Rolling element

Roller or ball, hardened to 60 ± 2 HRC, honed and lapped for minimum friction.

Cage

Pressed steel (CRC) or machined brass; guides and separates the rolling elements.

Inner ring

Cylindrical or 1:12 / 1:30 tapered bore, dimensionally stabilised after heat treatment.

Core technical data

Material: SAE 52100 / Gcr15
Hardness: 60 ± 2 HRC
O.D. range: 50 – 500 mm
Cage: CRC steel / brass
Clearance: C0 / C3 / C4
Standard: ISO 9001

Manufacturing Process

Eleven stages,
raw steel to packed bearing.

Selection of raw materials

SAE 52100 steel from reputed manufacturers, conforming to international standards, used for races and rolling elements. Cages are produced from CRC material and brass to international specification.

Quality check

The chemistry of the SAE 52100 steel is checked, tested and verified through metallurgical testing performed by expert metallurgists before manufacturing commences.

Forging & annealing

Material is heated by electric induction and impact rolled to shape. Spheroidize annealing in a SCADA-controlled electric furnace improves microstructure, ductility and toughness.

CNC turning

Forged material is turned on automatic CNC machines known for reliable operation and high productivity on complex components held to the highest degree of accuracy.

Heat treatment

Rings and rollers are quenched in molten salt, hardened to 60 ± 2 HRC, then tempered and hardness tested for dimensional stability and the required microstructure.

Grinding

Four stages — face grinding, OD grinding, track grinding and ID grinding with an electronic in-process measuring system controlling size variation.

Super finishing

Roughness average on the track is reduced using honing and lapping machines, maintaining the Ra value that defines a superfinished bearing component.

Inspection

All races and rollers are 100% dimensionally and visually checked against requirement.

Cleaning & assembly

Components are washed in an automatic washing machine to clear remaining dirt and dust, after which the bearings are assembled.

Final inspection

Assembled bearings are inspected to international standards and specifications, or to customer requirements.

Packing

Bearings are washed, rust preventive oil is applied by automatic spraying, then wrapped in plastic, boxed individually and packed into master cartons.

39,840

Sq. ft. built area

5,100

Sq. m. land area

50–500

mm outside dia.

ISO 9001

Quality system

Industries Served

Built for the hardest service.

Automotive

Wheel hubs, gearboxes, differentials and transmission assemblies for passenger and commercial vehicles.

Agriculture

Tractors, harvesters, tillage equipment and irrigation drives operating under shock load and contamination.

Construction

Excavators, loaders, cranes, concrete plant and material handling equipment.

Stone Crushing

Jaw and cone crushers, vibrating screens and conveyor systems in continuous abrasive duty.

Steel Rolling Mills

Roll necks, mill stands, run-out tables and continuous casting lines under extreme radial load.

Paper Mills

Dryer sections, calenders, winders and press rolls demanding thermal stability and long service life.

Industrial EquipmentStone Crushing IndustriesRolling MillsAgricultureConstructionAutomotiveHeavy VehiclesPaper MillsFood IndustriesPower MotorsCement PlantsMaterial Handling

Mill-Duty Product Lines

Tailor-made bearings since 1970

Non-standard shaft, housing and load requirements for hot and cold rolling mills, continuous casting, sintering plants, palletising, conveyors and gear transmissions.