KHS-131803/01 / SIG-131803/01 Automotive Bearings / Deep Groove Ball Bearing 131803/1 21.3x35x7 mm

KHS-131803/01,SIG-131803/01,131803/1 are three interchangeable part numbers for the same non-standard thin-wall single row deep groove ball bearing with unified dimension 21.3×35×7mmAlibaba.co.... The ultra-thin width design fits compact narrow installation space of special equipment, matched with double-sided 2RS multi-lip contact rubber seals as standard configuration, optional ZZ metal dust shield version. Super-finished raceway reduces rotation friction torque, stable continuous high-speed operation under light radial loads, effectively block textile fiber dust, food residue, printing ink debris and workshop moisture. Widely used as replacement spare parts for textile winding machines, food blow molding equipment, digital printing rollers, small packaging machinery and miniature automation transmission assemblies.

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Full technical CAD drawings and machinery fitment list available upon request

1. Three model codes fully interchangeable, identical dimensional & load parameters, only different brand serial prefix (KHS/SIG/base 131803/1) for different equipment OEM marking standards
2. Ultra-thin 7mm width thin-wall structure solves space-limited installation requirement of narrow roller and compact transmission shafts, no housing modification needed
3. Upgraded 2RS double lip contact sealing structure blocks fiber, ink, food powder and moisture, prevent internal grease dilution and premature bearing wear
4. Mirror superfinished inner & outer raceway and steel ball surface minimize friction loss, eliminate abnormal buzzing noise during long-time uninterrupted equipment running
5. Optimized internal normal clearance adapts to light-load high-speed continuous rotation, avoid bearing seizure caused by heat accumulation in compact sealed housing
6. Through-hardened GCr15 bearing steel with stable heat treatment delivers outstanding anti-fatigue and wear resistance, fit for 24-hour non-stop production line operation
7. Support customized seal type, clearance grade, high-speed anti-dust grease, OEM laser marking and neutral vacuum anti-rust packaging for global machinery aftermarket distributors

Reduce textile/food/printing equipment downtime and cut overall production maintenance expenses

This non-standard thin wall special bearing is widely suitable for:

• Textile winding machines, warping machines, textile roller small transmission support assemblies
• Food blow molding machines, food packaging conveying miniature rotary roller parts
• Digital printing machines, heat transfer printing equipment small roller supporting bearings
• Light industrial small packaging machinery, miniature automation equipment drive shafts
• Machinery repair shops and global industrial special spare parts wholesale distributors

Dedicated replacement bearing for overhaul of compact narrow-space textile, food and printing production equipment

• Over 25 years professional customized non-standard bearing manufacturing experience for textile, food and printing industry
• Strictly comply with original 21.3×35×7mm dimension and tolerance standards, 100% interchangeable with KHS/SIG/131803 series original bearings
• Complete production workflow covering forging, heat treatment, precision inner/outer ring grinding and finished product noise & durability testing
• Sufficient spot inventory for 131803 thin wall series, fast shipment for bulk special machinery spare parts orders
• Professional engineering team offers roller disassembly, press-fit installation guidance and equipment model fitment verification
• Products exported to over 50 countries, stable long-term supply for industrial special equipment aftermarket suppliers

We supply low-noise thin-wall customized bearings for textile, food and printing production equipment

1. Raw steel chemical composition and hardness inspection before bearing processing
2. CNC turning, raceway precision grinding and mirror superfinishing processing
3. Constant temperature quenching & tempering heat treatment to stabilize internal material stress
4. Full finished product testing: internal clearance, rotation noise, rotational flexibility, high-speed durability and light alternating load fatigue test
5. Full dimensional tolerance inspection for inner ring, outer ring plus visual appearance check
6. Anti-rust oil coating + independent vacuum packaging to prevent rust during long-distance sea transportation

Every batch of thin wall bearings passes full inspection before shipment to guarantee stable production line operation

Looking for wholesale KHS-131803/01 / SIG-131803/01 / 131803/1 non-standard thin wall deep groove bearings for textile food printing machinery?
Send your inquiry to obtain:

1. Competitive factory direct bulk unit price for all three interchangeable model codes
2. Complete textile/food/printing machinery fitment checklist
3. Custom seal type, clearance grade and OEM laser marking packaging solutions
4. Technical support for small roller assembly disassembly and installation adjustment

Contact us for detailed catalog and real-time stock availability

Q1: Are KHS-131803/01, SIG-131803/01 and 131803/1 completely interchangeable?

Yes, three numbers stand for the exact same bearing with identical 21.3×35×7mm dimensions, load, speed and sealing parameters; the difference only lies in OEM brand prefix marking, can replace each other directly.

Q2: What failure phenomena require replacement of this thin wall bearing?

Continuous irregular buzzing noise during roller rotation, obvious roller shaking, fiber/ink dust intrusion leading to sluggish rotation, excessive temperature rise of narrow bearing housing under long continuous operation.

Q3: What seal options are available for 131803 series bearings?

Standard version is 2RS double rubber contact seals for dusty workshop environments; optional ZZ double metal non-contact dust shields for clean dry production lines.