SB 22204 W33 SS Spherical Roller Bearing With Double Seals 20x47x18mm

1.Product Overview

SB 22204 W33 SS belongs to SB series single row self-aligning spherical roller bearing, unified metric dimension inner bore d=20mm, outer diameter D=47mm, overall width B=18mm, straight cylindrical inner bore.
Suffix definition:

• W33: Outer ring machined circumferential lubrication groove with 3 oil filling holes, supports online grease replenishment without disassembling equipment, ensures lasting lubrication and heat dissipation during continuous operation;
• SS: Double-sided multi-lip NBR composite contact rubber seal, effectively isolate dust, fiber debris, cutting fluid and light moisture, adapt dusty, humid and slightly polluted workshop working conditions.

SB series adopts separated single row barrel roller structure with stamped steel cage, excellent self-aligning performance, maximum allowable angular deflection ±2°, automatically compensate shaft bending, housing machining tolerance and assembly misalignment. Inner ring, outer ring and spherical rollers are made of GCr15 bearing steel through integral quenching and ultra-precision spherical raceway grinding. This bearing bears heavy radial load together with moderate bidirectional axial load, widely used for miniature conveyor rollers, textile looms, small mixers, light agricultural machinery and general small industrial rotating shafts.

Get a quote within 24 hours for your project

2.Technical Specifications

Complete dimension drawings, lubrication matching scheme and misalignment fatigue test data can be provided on request.

3.Key Advantages

1. Single row compact spherical roller self-aligning design, avoids unilateral roller peeling and bearing jamming caused by shaft deflection or installation offset
2. W33 integrated outer ring oil groove with three oil holes, convenient on-site refueling without disassembly, greatly reduce production line maintenance downtime
3. Double-sided SS multi-lip composite sealing structure, strong dust, fiber and splash liquid isolation ability, extend service life in harsh dusty environment
4. Separated stamped steel cage evenly distributes barrel rollers, stable load sharing under alternating impact radial load, low vibration and low noise for long-cycle continuous operation
5. Small thin-wall overall size, occupies less radial installation space, perfect matching miniaturized light-duty transmission equipment layout
6. Customizable options: open non-seal version without SS, C3 enlarged clearance, P5 high precision, OEM laser marking, high temperature resistant special grease filling

Effectively reduce failure rate of small conveyor and textile machinery rotating assemblies in dusty production workshops

4.Applications

This SB 22204 W33 SS double sealed single row spherical roller bearing is widely applied to light-duty industrial rotating equipment:

• Mini logistics & food packaging conveyor roller supporting assemblies
• Textile weaving looms, yarn winding machine small transmission shaft wear parts
• Small chemical mixing equipment, plastic auxiliary rotating spindle replacement bearings
• Light feed processing machinery, small agricultural harvester drive shaft components
• General factory small fans, miniature crushers, light transport rotary supporting spare parts
• Aftermarket interchangeable single row self-aligning roller bearing with W33 lubrication groove and double side seals
• Cost-effective compact sealed self-aligning bearing solution for narrow space light industrial transmission equipment

5.Why Choose GQZ Bearing

• 25 years of professional SB series single row sealed spherical roller bearing production experience
• SB 22204 W33 SS fully dimensionally interchangeable with international standard SB series bearings, consistent self-aligning performance, load capacity and sealing durability
• Complete OEM & ODM customization: open non-seal structure, C3 clearance upgrade, high precision grade, special high/low temperature grease
• Full strict inspection before delivery: raw material hardness test, spherical raceway grinding precision, SS seal mud splash aging test, misalignment heavy load cycle fatigue test
• Professional spherical roller bearing engineers provide shaft & housing tolerance matching and W33 online lubrication operation guidance within 24 hours
• Stable mass production lines with preferential bulk wholesale price for long-term textile, conveyor and agricultural machinery manufacturers
• We focus on reliable self-aligning capability, convenient W33 refueling design, durable double SS sealing and long-term win-win cooperation with global industrial machinery buyers

6.Quality Control

• Raw material chemical composition and hardness inspection of GCr15 chrome bearing steel
• Precision turning, quenching & tempering, spherical raceway mirror superfinishing for inner and outer rings
• Constant temperature stress relief heat treatment to improve anti-deformation under combined radial-axial misalignment load
• Targeted performance tests: W33 oil channel smooth refueling test, double SS seal dust/mud isolation durability test, ±2° misalignment reciprocating heavy load test
• Spherical roller sorting, steel cage assembly, full dimension & appearance recheck before anti-rust oil packaging and shipment
• Every batch of SB22204 W33 SS bearings passes sampling continuous rotation misalignment fatigue test to guarantee stable long-term operation in dusty industrial equipment

7.Get a Quote Now

If you need SB 22204 W33 SS double sealed self-aligning spherical roller bearings with W33 lubrication groove for small conveyor and textile machinery maintenance, send your inquiry directly.
You will receive full professional support after sending inquiry:

• Fast official factory quotation reply within 24 hours
• One-on-one technical guidance on shaft/housing tolerance matching and W33 online lubrication from professional bearing engineers
• Customized bearing scheme including open non-seal variant and C3 enlarged clearance options
• Competitive direct factory bulk price for large industrial machinery spare part orders
• Send your purchase quantity of each model and dusty/humid working environment to get detailed formal quotation

8.FAQ

Q1: What do W33 and SS suffixes mean?
A1: W33 means outer ring with circumferential lubrication groove and three oil injection holes for online refueling; SS stands for double-sided composite rubber contact seals for dust and moisture prevention.

Q2: What’s the difference between SB single row and standard double row 222xx spherical roller bearings?
A2: SB series single row structure has thinner width and lighter weight, suitable for compact light-load miniature equipment; double row bearings carry larger heavy load for mining and large construction machinery.

Q3: How much misalignment can SB 22204 W33 SS compensate?
A3: The spherical raceway design allows maximum ±2° angular misalignment, effectively offset shaft deflection and assembly installation deviation.