PR14089 / PR14135 / PR14182 Germany Made Linear Ball Bearing for CNC Machine

1. Product Overview

PR14089, PR14135, PR14182 are standard inch-size linear roller bearing units, widely recognized as heavy-duty linear roller slide blocks, matched with corresponding inch linear guide rails for precision heavy-load mechanical equipment. Adopt full cylindrical roller linear contact structure, far higher rigidity and radial load capacity than ball linear slides, minimal elastic deformation under heavy cutting pressure.

Three specifications form complete size gradient for different load demands: PR14089 for medium heavy automation sliding axes, PR14135 for standard CNC machine tool feed axes, PR14182 for ultra-heavy gantry machinery, hydraulic sliding tables and metallurgical processing equipment.

The whole slide block is integrally forged alloy steel with overall quenching heat treatment, ultra-precision grinding raceway surface. Optional multi-layer composite dustproof oil seals on both ends, effectively isolate iron filings, cutting fluid and workshop abrasive dust, adapt to harsh metal processing production environments. Equipped with side centralized grease injection hole for circulating lubrication, stable reciprocating motion under long-time alternating impact load.

2. Technical Specifications

1. Model Range: PR14089, PR14135, PR14182 inch linear roller bearing unit
2. Rolling Element: Cylindrical roller, dense double-row roller layout, line contact raceway
3. Raw Material: Alloy steel slide block + fully quenched high carbon chromium roller
4. Precision Grade: C normal precision / H high precision / P super precision customizable
5. Preload Grade: Z0 light preload, ZA medium preload, ZB heavy preload for rough cutting
6. Sealing Option: Open type / double-side multi-layer contact dustproof oil seal
7. Lubrication: Side standard grease nipple, compatible automatic centralized lubrication system
8. Working Temperature: -20℃ ~ 120℃
9. Size & Load Differentiation
   • PR14089: Compact medium heavy inch specification, small installation footprint, dynamic load 76kN, static load 121kN
   • PR14135: Universal machine tool standard size, widened block base, dynamic load 132kN, static load 208kN
   • PR14182: Oversized ultra-heavy model, thickened bearing body, dynamic load 195kN, static load 316kN

3. Core Advantages

• Dense double-row cylindrical roller line contact design, ultra-high structural rigidity, effectively suppress cutting vibration, improve workpiece surface finish and long-term precision retention of machine tools.
• Inch unified mounting hole standard, PR14089/14135/14182 three sizes interchangeable with original imported PR series roller slides, convenient equipment design and aftermarket replacement maintenance.
• Optional multi-layer composite dustproof sealing assembly, multi-stage isolation of metal debris and cooling liquid, avoid roller corrosion and raceway peeling failure, extend service life in cutting workshops.
• Integrally forged thickened slide base, strong anti-deformation performance, no clearance expansion or block bending under continuous heavy static pressure.
• Built-in closed internal lubrication channel, uniform grease coverage on all rollers, reduce manual refueling frequency and equipment downtime.
• Complete load gradient from medium to ultra-heavy, one-stop selection for light automation finishing, heavy CNC rough cutting and large gantry forming equipment.
• Multiple precision and preload matching schemes, meet low-noise finishing, high-impact rough machining and high-precision detection equipment different working conditions.
• Comprehensive customized service: manganese phosphate anti-rust surface treatment, OEM laser marking on block side, neutral export carton anti-rust packaging, high temperature resistant special grease pre-filling.

4. Application Scenarios

PR14089 / PR14135 / PR14182 inch linear roller bearing units are core high-rigidity linear motion spare parts for heavy industrial machinery:

• PR14089 Matching Equipment: Medium vertical machining center, automatic welding gantry, heavy palletizing manipulator, die-casting auxiliary sliding mechanism
• PR14135 Matching Equipment: Heavy CNC milling machine, five-axis machining center, hydraulic press sliding table, woodworking heavy cutting equipment
• PR14182 Matching Equipment: Large gantry machining center, metallurgical rolling sliding frame, stone large cutting machine, heavy mold forming machine
• General Application Fields: Heavy automated production line, port cargo handling sliding support, injection molding machine moving template, construction machinery precision sliding assembly

Aftermarket fully interchangeable PR series inch linear roller slide blocks, cost-effective high-load linear motion solution for machine tool manufacturers, automation equipment OEM and mechanical maintenance factories bulk procurement.

5. Why Choose GQZ Bearing

25 years professional manufacturing experience of PR series inch heavy-duty linear roller bearing units including PR14089, PR14135, PR14182.

1. Strict raw material incoming inspection: alloy steel blank metallographic analysis and hardness test before production, guarantee base rigidity and wear resistance.
2. Full-process precision control: forging, quenching, tempering, raceway ultra-precision grinding, roller sorting, preload calibration, finished product integrated inspection.
3. Complete professional testing equipment: each batch undergoes rigidity test, reciprocating fatigue aging test, dust & liquid sealing durability simulation test before delivery.
4. Professional linear motion engineering team provides one-on-one model selection guidance, load calculation, lubrication scheme and installation technical support within 24 hours.
5. Stable mass production capacity, factory direct competitive wholesale price, neutral moisture-proof export packaging, support mixed batch delivery of three PR specifications.

We focus on double-row roller high-rigidity linear slide design, multi-layer all-weather dustproof sealing structure, unified inch interchangeable installation standard, long-term win-win cooperation with global CNC machine tool and heavy automation equipment spare parts buyers.

6. Quality Control

1. Raw Material Inspection: Alloy steel slide block blank and roller raw material chemical composition, hardness and internal flaw detection.
2. Heat Treatment Process: Integral quenching + low temperature tempering, eliminate internal residual stress to prevent long-term service deformation.
3. Raceway Precision Grinding: Multi-step fine grinding process, strictly control raceway roughness and geometric tolerance to maintain stable long-term motion precision.
4. Roller Sorting Screening: High-precision dimensional classification of cylindrical rollers, ensure consistent assembly clearance and uniform preload.
5. Sealing Assembly Test: Oil seal press fitting and reciprocating dust & cutting fluid immersion simulation test, verify long-term sealing performance.
6. Finished Product Comprehensive Inspection: Dynamic/static load test, overall rigidity detection, preload uniformity inspection, full appearance defect screening.
7. Packaging & Shipment: Anti-rust oil coating + moisture-proof carton packaging, each batch attached official inspection report, special anti-rust protection for long-distance sea transportation.

7. Get A Quote Now

If you need PR14089, PR14135, PR14182 inch heavy-duty linear roller bearing units for CNC machine tool manufacturing, heavy automation equipment assembly and mechanical maintenance bulk matching, send your purchase inquiry directly.

You will receive full professional supporting services after submitting inquiry:

1. Official sealed formal quotation reply within 24 working hours, clear unit price, MOQ, delivery cycle and export packaging standard.
2. One-on-one technical model selection guidance: equipment load calculation, precision/preload grade matching, lubrication system recommendation from professional linear motion engineers.
3. Customized product solution support: surface anti-rust coating, OEM laser marking, high temperature grease filling, non-standard lengthened slide block customization.
4. Large order preferential factory direct price, stable supply cycle, support mixed batch delivery of PR14089/PR14135/PR14182 three inch sizes.

Please provide your required purchase quantity, matched inch guide rail model, equipment type and workshop dust/cutting fluid working environment to obtain detailed formal quotation document.

8. FAQ

Q1: What is the advantage of PR linear roller slide compared with ball linear guide block?

A1: PR series adopts cylindrical roller line contact, higher rigidity and bearing capacity, tiny deformation under heavy cutting impact load; ball slide is point contact, only suitable for light load high-speed finishing equipment.

Q2: How to select PR14089 / PR14135 / PR14182 three inch specifications?

A2: Medium heavy automation equipment choose PR14089; standard heavy CNC milling/machining center choose PR14135; large gantry, metallurgy, ultra-heavy forming equipment choose PR14182, you can provide equipment load data for professional calculation and model recommendation.

Q3: Can PR series roller slides work in iron dust and cutting fluid workshop?

A3: Yes, optional double-side multi-layer composite dustproof oil seal can effectively block metal debris and cooling liquid invasion, regular grease refueling can greatly extend service life.