1. Product Overview

RLM152220 is standard round linear motion ball bushing with 15mm inner bore, widely matched with 15mm chrome-plated optical shafts for reciprocating linear sliding in CNC engravers, packaging automation, 3D printing and electronic assembly equipment.

It adopts integrated seamless steel outer shell + circulating steel ball plastic retainer integral structure, built-in grease storage cavity, both ends equipped with dust-proof rubber rings to block workshop dust and debris. Circulating steel ball rolling friction greatly reduces sliding resistance, realizing stable high-speed low-noise linear reciprocating movement. The outer shell is precision cold-drawn steel pipe with high rigidity, not easy to deform after being pressed into standard round sliding seat. All steel balls are GCr15 fully quenched bearing steel with mirror polishing surface, uniform contact stress distribution and long-term wear resistance. Compact round outline, simple press-fit installation, convenient disassembly and maintenance in later equipment overhaul.

2. Technical Specifications

3. Core Advantages

• Standard RLM15 round outer size, universal interchangeable with global 15mm linear ball bearings, perfectly fit standard aluminum sliding seat without structural modification.
• Double-end rubber dust seal structure, effectively isolate workshop dust, fiber scraps and fine particles, prevent internal grease loss and steel ball rusting.
• Closed circulating steel ball infinite reciprocating sliding design, rolling friction instead of dry sliding friction, small running resistance, energy saving for high-speed automation equipment.
• Integrated PA plastic retainer evenly separates each group of steel balls, eliminate collision noise between balls, avoid steel ball falling off under long-term frequent reciprocating motion.
• Mirror superfinished GCr15 steel balls, uniform stress distribution, outstanding wear resistance, maintain stable linear transmission precision for a long time.
• High-rigidity integral steel outer shell, no deformation after press fitting, guarantee long-term linear movement straightness of automation slides.
• Built-in grease storage structure inside the bushing, extend refueling cycle and reduce regular equipment maintenance frequency.
• Comprehensive customized service: stainless steel anti-rust upgrade, OEM laser marking on outer surface, neutral export carton anti-rust packaging, high temperature resistant grease pre-filling.

4. Application Scenarios

RLM152220 15mm round linear ball bearing is core precision linear transmission spare part for light automation and numerical control equipment:

• Desktop CNC engraving machine, small milling machine X/Y/Z axis linear slide support assemblies
• FDM 3D printer reciprocating sliding matching units for three-axis movement
• Automatic labeling machine, carton packaging machine light load linear moving positions
• Electronic product assembly equipment, small automatic feeding manipulator sliding components
• Medical testing instruments, laboratory precision testing equipment linear guide bearings

Aftermarket interchangeable RLM series standard round linear ball bushing
Cost-effective low-friction precision linear bearing solution for automation equipment manufacturers, CNC spare parts OEM and machinery maintenance factories bulk procurement.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience of RLM series standard round linear ball bearings including RLM152220
• RLM152220 fully dimensionally interchangeable with international standard 15mm linear bushings, consistent sliding load rating, dust sealing and reciprocating fatigue resistance standards.
• Complete OEM & ODM customization service supporting stainless steel anti-corrosion material and special high temperature resistant grease filling.
• Strict full pre-delivery inspection flow: outer shell dimensional tolerance test, steel ball hardness screening, long-cycle high-speed reciprocating sliding aging test, dust-proof sealing wear simulation test.
• Professional linear bearing engineering team provides one-on-one linear load calculation, optical shaft material matching and sliding seat press-fit installation technical guidance within 24 working hours.
• Stable mass production workshop with competitive factory direct bulk wholesale price for large-volume single model orders, long-term stable supply for global automation equipment and CNC spare parts buyers.

We specialize in circulating ball linear bushing structure, double-sided dust-proof sealing design, universal metric interchangeable mounting dimension standard and long-term win-win cooperation with automation transmission equipment suppliers.

6. Quality Control

• Raw material hardness and dimensional inspection for cold drawn steel outer shell, PA retainer and GCr15 steel ball blanks
• Outer pipe precision cutting, inner hole fine grinding and deburring process for linear bushing outer shell
• Steel ball high-temperature quenching, mirror polishing and automatic high-precision sorting production line
• Plastic retainer injection molding, steel ball automatic circulating assembly and double-side rubber seal press-fitting process, strictly control ball running clearance
• Targeted classified performance testing: RLM152220 long-cycle high-speed reciprocating sliding aging test, repeated dust particle sealing durability test, continuous light load precision wear detection
• Full dimensional tolerance, surface burr and sealing tightness recheck before anti-rust oil coating and export carton packaging shipment

Every production batch of RLM152220 linear bearings undergoes full sampling CNC slide reciprocating simulation test to guarantee stable long-term smooth low-noise linear sliding performance in automation and numerical control equipment.

7. Get A Quote Now

If you need RLM152220 15mm double dust seal linear ball bushings for CNC engraving machine production, 3D printer assembly and automation equipment maintenance bulk matching, send your purchase inquiry directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory sealed formal quotation reply within 24 working hours
• One-on-one linear dynamic/static load calculation, optical shaft hardness selection and sliding seat press-fit installation technical guidance from professional linear bearing engineers
• Customized bearing performance solutions including stainless steel anti-rust upgrade and high-temperature resistant grease options
• Competitive direct factory bulk wholesale price for large-volume RLM152220 single model orders

Provide your required purchase quantity, equipment reciprocating speed and workshop dust working environment to obtain detailed formal quotation document.

8. FAQ