KB30PP Closed Linear Ball Bearing Double Sides PP Lip Seal 30x47x68mm Precision CNC Automation Linear Guide Bushing

The KB30PP closed type linear ball bearing features full closed outer ring structure and double-sided PP lip rubber seals. It adopts circulating steel ball circulation design with integrated plastic retainer, delivers ultra-low friction linear reciprocating motion, excellent dust and moisture isolation performance, widely matched to CNC machine tools, automated production lines and precision linear transmission equipment.

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👉 Full technical datasheet and installation drawings available upon request

• Closed integral outer ring, stable structure, applicable for unsupported single shaft installation
• Double PP lip seals fully block dust, water vapor and cutting fluid, lock internal lubricating grease
• Circulating steel ball layout realizes smooth low-resistance linear sliding movement
• Precision ground inner and outer raceway ensures high straightness and low running noise
• Plastic cage reduces weight and friction, stable operation under medium high reciprocating speed

Custom surface anti-rust treatment, pre-lubrication and special clearance options supported

👉 Improve linear motion precision and extend maintenance cycle of automation equipment

This sealed linear ball bearing is widely used in: CNC machine tool sliding axes and precision linear guide assemblies Automated assembly lines, packaging machinery and textile equipment 3C processing equipment, small testing instruments and printing machinery General precision equipment requiring dustproof closed linear sliding support 👉 Ideal fully sealed closed linear bushing solution for precision automation machinery

• 20+ years experience in linear motion bearing manufacturing
• Exported to 50+ countries worldwide
• Rich OEM experience for PP sealed closed linear bearing bulk orders
• Strict dimensional tolerance, seal tightness and sliding performance inspection before shipment
• Fast professional technical reply within 24 hours

Stable mass supply for long-term automation equipment manufacturer cooperation

 👉 We focus on stable precision quality and sustainable long-term partnership

• High chromium bearing steel raw material incoming hardness inspection
• Ultra-precision grinding for inner and outer circular raceway
• Precision injection molding plastic cage matching test
• Seal dustproof performance, reciprocating wear and load durability testing

Full dimension re-inspection before packaging delivery

 👉 Consistent smooth high-precision linear sliding performance for every bearing

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• Fast factory quotation within 24h
• Professional linear motion bearing technical parameter support
• Custom pre-grease & anti-rust surface treatment solutions
• Competitive bulk factory wholesale price

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