CR6016PX1 Single Row Radial Tapered Roller Bearing for Excavators

1. Product Overview

CR6016PX1 and CR6016PX2V6 are large-size separable single row tapered roller bearings specially customized for heavy excavator final drive travel reduction assemblies, unified core mounting dimension 300×380×38mm, fully interchangeable outer installation space.
Suffix code difference explanation:

• CR6016PX1: Standard base PX precision grade, conventional integral quenching heat treatment, standard steel stamping cage, cost-effective for medium-load intermittent construction operation conditions.
• CR6016PX2V6: Upgraded reinforced version; PX2 ultra-precision internal grinding + V6 special surface strengthening process, optimized logarithmic roller contact curve, improved wear resistance, anti-shock and high-temperature durability, low running noise, suitable for 24h uninterrupted heavy impact mining excavator working conditions.

Open split cone & cup structure, inner cone assembly (inner ring + tapered rollers + cage) and outer cup can be disassembled independently, convenient separate component replacement, preload adjustment and on-site maintenance of large travel motor reducers. All rings and rolling elements adopt through-hardened GCr15 high-carbon chrome bearing steel, strict roller sorting and ultra-precision raceway superfinishing, stable rotation under long-term alternating heavy radial & axial combined impact load. Widely matched for Komatsu, Hitachi, Doosan large tonnage excavator walking drive systems.

2. Technical Specifications

Unified universal base dimension (CR6016PX1 & CR6016PX2V6 same outline size)
d=300mm, D=380mm, T=38mm, inner ring width B=36mm, outer ring width C=28mm
Structure: Single row separable tapered roller bearing, open without seal
Raw material: GCr15 bearing through hardened steel
Standard cage: Stamped steel cage; solid brass cage optional for high temp continuous heavy load
Standard clearance: C0 normal clearance, C3 enlarged clearance customizable
Minimum fillet radius r=3mm
Operating temperature range: -30℃ ~ 120℃ (CR6016PX2V6 up to 130℃)
Net weight: 9.44kg
Calculation coefficient: e=0.40, axial factor Y=1.49, static axial factor Y0=0.88
Basic dynamic radial load Cr: 400kN
Basic static radial load C0r: 825kN
Grease limiting rotating speed: 2100r/min

Performance difference between two models

1. CR6016PX1: PX standard precision, conventional heat treatment, general wear resistance, intermittent load matching
2. CR6016PX2V6: PX2 high precision + V6 reinforced surface treatment, stronger anti-peeling & anti-abrasion, long continuous heavy-duty service life

Complete installation drawings, load characteristic curves and accelerated heavy impact fatigue test reports can be provided upon customer request.

3. Core Advantages

1. Two models share fully interchangeable mounting dimensions, customers can select cost-control CR6016PX1 for intermittent work or reinforced CR6016PX2V6 for 24h heavy impact mining excavation.
2. Large thin-wall compact width design, ultra-high radial-axial combined load capacity under limited axial installation space, perfectly fit heavy excavator narrow final drive housing layout.
3. Fully separable independent cone & cup split structure, damaged inner cone or outer cup can be replaced separately without overall disassembly of large travel motor, greatly reduce equipment maintenance downtime and spare part procurement cost.
4. Precision mirror superfinished raceway + logarithmic optimized roller contact curve, uniform load distribution on roller contact surface, effectively reduce edge stress concentration, delay raceway peeling and roller abrasion failure.
5. Dual cage configuration options: cost-effective stamped steel cage for general intermittent heavy load; solid brass cage anti-deformation for non-stop high-temperature harsh mining production lines.
6. Full customizable service support: C3 enlarged radial clearance, P5 high precision grade, OEM laser marking, special high-temperature anti-oxidation grease filling, neutral export brand packaging.
7. CR6016PX2V6 exclusive V6 surface strengthening heat treatment process, uniform material hardness and internal structural strength, extend excavator travel bearing overhaul cycle over 35% compared with standard CR6016PX1.
8. Standard open design supports built-in gearbox circulating oil bath lubrication, adapt to excavator travel reducer internal abundant circulating lubricating oil system, long-term stable continuous operation.

4. Application Scenarios

CR6016PX1 / CR6016PX2V6 large heavy-duty tapered roller bearing is core vulnerable spare part for large tonnage construction & mining machinery:

• Large excavator final drive travel reduction box main support bearing assemblies (Komatsu, Hitachi, Doosan heavy crawler excavator walking motor)
• Mining underground transport vehicle wheel hub heavy load bearing positions
• Large crawler loader, heavy road roller main drive axle positioning bearing units
• Heavy-duty engineering vehicle differential and large gearbox transmission support positions
• Large mining conveyor heavy-duty drive shaft rotary support assemblies

Aftermarket interchangeable 300mm bore CR series large tapered roller bearing
Cost-effective two-grade interchangeable bearing solution for excavator OEM manufacturers, heavy machinery repair factories and mining equipment bulk matching.

5. Why Choose GQZ Bearing

1. 25 years professional manufacturing experience for CR series large bore excavator tapered roller bearings including CR6016PX1 & CR6016PX2V6
2. CR6016PX1 and CR6016PX2V6 fully dimensionally interchangeable with international standard CR series excavator bearings, consistent mounting size, load rating and assembly tolerance indicators.
3. Complete OEM & ODM customization service supporting brass cage, C3 clearance upgrade, high precision grade and special high/low temperature lubricant filling.
4. Full strict pre-delivery inspection: raw material hardness test, cone raceway grinding precision inspection, heavy load reciprocating impact fatigue cycle test, contact surface roughness detection.
5. Professional tapered bearing engineering team provides large shaft and heavy housing tolerance matching installation technical guidance within 24 hours.
6. Stable mass production lines with favorable bulk wholesale prices for long-term excavator OEM manufacturers, mining equipment suppliers and heavy machinery repair factories.

We focus on large thin-wall heavy-load separable design, ultra-high radial-axial combined load capacity, easy independent maintenance structure and long-term win-win cooperation with global heavy construction & mining machinery spare parts buyers.

6. Quality Control

1. Raw material chemical composition and surface hardness inspection of GCr15 chrome bearing steel
2. Precision turning, quenching tempering and mirror superfinishing processing for inner and outer ring tapered raceways
3. Differentiated targeted heat treatment process: CR6016PX1 standard integral quenching; CR6016PX2V6 extra V6 special surface strengthening quenching to eliminate internal processing residual stress.
4. Classified targeted performance testing: CR6016PX1 long-cycle intermittent load aging test; CR6016PX2V6 continuous heavy impact wear resistance test, high-speed low friction torque temperature rise detection.
5. Tapered roller sorting, steel/brass cage assembly, full dimensional and appearance recheck before anti-rust oil packaging and shipment.

Each batch of CR6016 series bearings passes full sampling heavy-load reciprocating rotation fatigue test to guarantee stable long-term operation inside heavy excavator travel reduction and mining transmission equipment.

7. Get A Quote Now

If you need standard cost-effective CR6016PX1 and V6 reinforced anti-wear CR6016PX2V6 large tapered roller bearings for heavy excavator final drive, mining machinery and construction equipment maintenance & OEM matching, send your inquiry directly.
You will receive complete professional supporting services after submitting your inquiry:

• Fast official factory quotation reply within 24 hours
• One-on-one large shaft & heavy housing matching tolerance installation technical guidance from professional CR series excavator bearing engineers
• Customized bearing scheme suggestions including brass cage and C3 enlarged clearance upgrade options
• Competitive direct factory bulk wholesale price for large spare parts bulk orders

Send your required purchase quantity and equipment continuous heavy-load & medium-high temperature working environment to obtain detailed formal quotation.

8. FAQ

Q1: What is the difference between CR6016PX1 and CR6016PX2V6?
A1: They share identical mounting dimensions and are fully interchangeable; CR6016PX1 is standard PX precision base model with conventional heat treatment for intermittent construction work; CR6016PX2V6 is PX2 high precision + V6 surface reinforced upgraded version, better anti-wear, anti-shock and high temperature performance, specially for 24h non-stop mining heavy excavators.
Q2: What structural characteristic do CR6016 series bearings have?
A2: Large-size metric open separable single row tapered roller bearing, inner cone assembly and outer cup can be disassembled separately, standard stamped steel cage, no built-in seal, suitable for equipment with internal circulating oil lubrication.
Q3: What loads can CR6016PX1 / CR6016PX2V6 bear?
A3: It can bear ultra-heavy combined radial load plus unidirectional axial thrust load; bidirectional axial positioning requires two bearings installed back-to-back/O-type with reasonable preload.