Spherical Roller Bearings

223 Series Spherical Roller Bearings

The 223 series spherical roller bearings adopt an extra-wide cross-section design with extended roller length, delivering substantially higher radial load capacity and enhanced impact resistance compared to the standard 222 series. The optimized internal roller arrangement evenly disperses contact stress, enabling stable and reliable operation under heavy fluctuating loads and frequent shock conditions.

Available with a full range of standard cage configurations, including CC stamped steel, E optimized internal geometry, and solid brass CA & MB variants, these bearings perfectly adapt to low-to-medium speed, heavy-load operating environments while maintaining stable lubrication and long-term operational stability.

Renowned for outstanding load-bearing performance and shock absorption capability, this series is highly suited for harsh-duty industrial equipment that endures frequent impact loads. Typical applications include stone crushers, large vibrating screens, heavy mining conveyors, gravel processing machinery and large-scale industrial mixing equipment.

Size range: Inner Diameter: 90-580 mm

Material: GCr15/GCr15SiMn/G20Cr2Ni4A

Load Capacity: High radial and axial load capacity

Cage Types: CC / E /CA / MB / others

1. What are 223 Series Spherical Roller Bearings

The 223 series are heavy-duty wide double-row spherical roller bearings with the widest cross-section among standard medium series. Their rollers are thicker and longer, specially engineered for extremely heavy radial loads. The self-aligning design accommodates shaft deflection and eccentricity under heavy load conditions.

2. Designation System of 223 Series Spherical Roller Bearings

Take bearing model 22324CAK/W33 as an illustration:

223: Series code. Digit 2 stands for double-row rollers; 23 indicates heavy-duty wide cross-section.
24: Bore code, representing a bore diameter of 120 mm.
CA: Machined brass cage; CC: Stamped steel cage; E: Reinforced rollers.
K: Tapered bore; W33: Outer ring lubrication groove; C3/C4: Increased internal clearance, mostly used for vibrating machinery.

3. Characteristics of 223 Series Spherical Roller Bearings

For bearings with the same bore size, load capacity far exceeds that of 213 and 222 series, delivering superior shock resistance.
Wide roller structure ensures uniform stress distribution and prevents localized wear under heavy loads.
Excellent self-aligning performance, ideal for equipment where shaft deflection occurs during operation.
Adaptable to harsh working environments with high temperature and heavy dust, featuring long maintenance intervals.
Tapered bore versions allow easy mounting and dismounting without complex shaft shoulder structures.

4. Applications of 223 Series Spherical Roller Bearings

Large vibrating screens, auxiliary shafts of mining ball mills, sand and stone crushers, auxiliary hot rolling rolls for metallurgy, heavy mixing equipment, large fans, matching components for tunnel boring machines.

Series	Bearing Models	d (mm)	D (mm)	T (mm)	Approx Weight (KGS)
22308	22308CC / 22308E / 22308CA / 22308MB	30	90	33	1
22309	22309CC / 22309E / 22309CA / 22309MB	45	100	36	1.4
22310	22310CC / 22310E / 22310CA / 22310MB	50	110	40	1.85
22311	22311CC / 22311E / 22311CA / 22311MB	55	120	43	2.35
22312	22312CC / 22312E / 22312CA / 22312MB	60	130	46	2.95
22313	22313CC / 22313E / 22313CA / 22313MB	65	140	48	3.5
22314	22314CC / 22314E / 22314CA / 22314MB	70	150	51	4.3
22315	22315CC / 22315E / 22315CA / 22315MB	75	160	55	5.25
22316	22316CC / 22316E / 22316CA / 22316MB	80	170	58	6.25
22317	22317CC / 22317E / 22317CA / 22317MB	85	180	60	7.2
22318	22318CC / 22318E / 22318CA / 22318MB	90	190	64	8.7
22319	22319CC / 22319E / 22319CA / 22319MB	95	200	67	10
22320	22320CC / 22320E / 22320CA / 22320MB	100	215	73	13
22322	22322CC / 22322E / 22322CA / 22322MB	110	230	80	17.5
22324	22324CC / 22324E / 22324CA / 22324MB	120	260	86	22.5
22326	22326CC / 22326E / 22326CA / 22326MB	130	280	93	28
22328	22328CC / 22328E / 22328CA / 22328MB	140	300	102	35
22330	22330CC / 22330E / 22330CA / 22330MB	150	320	108	42
22332	22332CC / 22332E / 22332CA / 22332MB	160	330	114	50
22334	22334CC / 22334E / 22334CA / 22334MB	170	360	120	59
22336	22336CC / 22336E / 22336CA / 22336MB	180	380	126	68.5
22338	22338CC / 22338E / 22338CA / 22338MB	190	400	132	79.5
22340	22340CC / 22340E / 22340CA / 22340MB	200	420	138	91
22344	22344CC / 22344E / 22344CA / 22344MB	220	460	145	115
22348	22348CC / 22348E / 22348CA / 22348MB	230	500	155	145
22352	22352CC / 22352E / 22352CA / 22352MB	260	530	165	180
22356	22356CC / 22356E / 22356CA / 22356MB	280	580	175	230

Production Process

Blueprint · Designing Precision

Given the structural characteristics of crossed roller bearings (rollers arranged in a 90° cross pattern), our technical team uses 3D CAD and finite element analysis (FEA) software to accurately calculate raceway angles, spacing, and interference.

Customizing products based on customer operating conditions, we benchmark against P2/P4/P5 tolerance classes and simulate post-assembly rotational precision in advance. The blueprint serves as the sole standard guiding all subsequent turning, grinding, and inspection processes.

Turning & Grinding · Rough to Mirror

Turning and grinding are the core processes that determine the bearing's geometric precision. We use high-rigidity CNC lathes for step-by-step ring processing, ensuring basic inner/outer diameter and raceway dimensions through rough, semi-finish, and finish turning while leaving grinding allowances.

We employ plunge grinding with formed grinding wheels for the V-shaped raceways of crossed roller bearings, and perform combination matching for the split inner/outer rings to ensure rotational plane runout meets P5 or higher standards.

Assembly · Interlocking Precision

The assembly of crossed roller bearings is more delicate than standard bearings: rollers must be arranged in an alternating cross pattern and precisely guided by spacers or cages.

All components are ultrasonically cleaned, dried, and grouped according to measured dimensions. High rigidity and stable torque are then imparted to the crossed roller bearings through negative clearance or preload adjustments. Assembly is completed in a constant temperature and humidity cleanroom to ensure P4/P2 level precision.

Inspection · Not Missing a Micron

As tolerance classes P5, P4, and P2 become progressively stricter, our inspection equipment and processes are upgraded accordingly:

We use high-precision roundness measuring instruments for dimensional tolerances, dial indicators with dedicated test mandrels for radial and axial runout, profilometers and Coordinate Measuring Machines (CMM) to verify raceway profiles and angles, and dedicated clearance and torque testers to determine clearance and starting torque.

Packaging · Anti-Rust & Protection

The packaging process is equally strict, ensuring zero loss of precision for the crossed roller bearings from the factory until pre-installation.

Eco-friendly anti-rust oil is evenly sprayed to ensure no residual particles in the inner cavity. Each bearing is vacuum-sealed in a thickened PE bag and film for water and dust protection, then boxed using wrapping tape. The outer carton is lined with high-density foam and pearl cotton to prevent transport collisions, and is marked with the model, precision grade (P5/P4/P2), and production batch number.