HFOE 218 BL Plummer Block With Oil Conveying Ring For PA Fan 90x410x250mm

1. Product Overview
HFOE218 BL is a self-align adjustable circulating linear ball bearing with double lip dust seal, matched for 18mm diameter optical linear shaft. The HFOE series features built-in floating self-compensation structure, which automatically correct parallelism deviation between shaft and mounting housing, avoiding stuck movement, abnormal noise and premature ball track abrasion caused by assembly misalignment. Suffix BL stands for double-sided integrated rubber sealing structure, providing excellent dust-proof and anti-cutting fluid performance for workshop working conditions.

This integrated bearing unit consists of fully quenched GCr15 outer sleeve, graded high-precision circulating steel balls, reinforced steel retainer and double nitrile rubber sealing rings. All raceways adopt ultra-precision mirror grinding process to achieve ultra-low friction reciprocating linear motion, stable positioning accuracy and long service life. Widely matched for CNC engraving machines, automatic pick-and-place assembly lines, printing machinery, packaging automation equipment, precision testing instruments and small robotic sliding axes.

2. Technical Specifications

3. Core Advantages

1. Built-in floating self-align mechanism, automatically offset shaft and housing assembly parallel error, greatly reduce equipment assembly reject rate and early bearing failure risk.
2. BL double-sided full sealing design, double rubber lip blocks dust, metal debris and cutting fluid from invading ball tracks, suitable for dusty industrial production environments.
3. Full GCr15 heat-treated structural parts, high surface hardness, outstanding wear resistance, stable precision retention under long-time continuous reciprocating operation.
4. Mirror polished arc ball raceway + strictly sorted high precision steel balls, ultra-small friction coefficient, smooth sliding without jamming, lower equipment power consumption.
5. Reinforced closed steel retainer, firmly lock circulating steel balls, prevent ball loss during disassembly, maintenance and component replacement.
6. Complete one-stop customization service: C3 enlarged clearance, stainless steel anti-rust version, OEM laser marking on outer sleeve, neutral export carton anti-rust packaging.
7. Compact cylindrical integrated bushing design, standard industry interchangeable dimensions, direct press-fit into common linear bearing housings without structural modification.
8. Outer sleeve uniform passivation anti-corrosion treatment, stable rust-proof performance for indoor normal humidity and light dust workshop environments.

4. Application Scenarios

HFOE218 BL double seal self-align linear ball bearing is core precision linear motion spare part for light industrial automation equipment:

• Small CNC engraving machine, precision drilling machine sliding axis linear support assemblies
• Automatic feeding, sorting and pick-and-place assembly line reciprocating positioning units
• Medium-small printing machinery paper feeding and tension roller linear guide components
• Light-duty automatic packaging equipment film conveying sliding bearing positions
• Medical inspection instruments, small precision measuring equipment linear motion assemblies

Aftermarket interchangeable 18mm shaft HFOE series self-align linear ball bearing
Cost-effective misalignment compensation double seal linear motion bearing solution for CNC OEM, automation equipment factories and printing & packaging machinery bulk procurement.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience for full HFOE series self-align adjustable linear ball bearings including HFOE218 BL
• HFOE218 BL fully dimensionally interchangeable with international standard self-align linear bushings, consistent self-compensation range, load rating and assembly tolerance indicators.
• Complete OEM & ODM customization service supporting C3 clearance upgrade, stainless steel anti-rust grade and special surface anti-corrosion treatment.
• Strict full pre-delivery inspection list: GCr15 hardness test, steel ball dimensional sorting inspection, repeated reciprocating fatigue test, high-speed long-cycle linear motion aging test.
• Professional linear bearing engineering team provides one-on-one clearance adjustment and shaft-housing matching installation technical guidance within 24 working hours.
• Stable mass production workshop with competitive factory bulk wholesale price for long-term CNC equipment factories, automation machinery suppliers and printing packaging equipment manufacturers.
• We focus on floating self-align deviation compensation structure, double seal dust-proof integrated bushing, compact space-saving layout and long-term win-win cooperation with global automation linear transmission spare parts buyers.

6. Quality Control

• Raw material chemical composition and hardness inspection of GCr15 bearing steel outer sleeve and steel retainer
• Precision stamping, cutting, quenching tempering and finish mirror grinding processing for linear bushing outer sleeve and arc ball raceway
• Steel ball precision hardening and ultra-superfinishing, automatic dimensional sorting screening production line
• Steel retainer integrated stamping forming and automatic ball assembly procedure to evenly control internal ball gap
• Classified targeted performance testing: HFOE218 BL long-cycle medium-load reciprocating linear aging test, repeated self-align adjustment fatigue test, combined radial load deformation detection
• Full dimensional tolerance and surface defect recheck before anti-rust oil coating and export carton packaging shipment
• Each production batch of HFOE218 BL bearings passes full sampling reciprocating linear load test to guarantee stable long-term self-aligning precision support performance inside CNC, automation, printing and packaging linear transmission equipment.

7. Get A Quote Now

If you need self-align adjustable HFOE218 BL double seal linear ball bearings for small CNC machine tools, automatic assembly lines and light packaging automation equipment maintenance & OEM bulk matching, send your purchase inquiry directly.
You will receive complete professional supporting services after submitting your inquiry:

• Fast official factory formal quotation reply within 24 hours
• One-on-one self-align clearance adjustment operation & shaft housing matching installation technical guidance from professional HFOE series linear bearing engineers
• Customized bearing performance scheme suggestions including C3 enlarged clearance upgrade options
• Competitive direct factory bulk wholesale price for large quantity spare parts orders

Send your required purchase quantity and equipment medium-load light dust working environment to obtain detailed sealed formal quotation document.

8. FAQ