GCr15 Steel T4DB050 Separable Tapered Wheel Bearings 50x90x21mm

1. Product Overview

T4DB050 is metric ISO355 standard T4DB series single row separable tapered roller bearing, unified core dimension inner bore d=50mm, outer diameter D=90mm, inner ring width B=20mm, outer ring width C=15.5mm, total assembly width T=21mm, standard small-size heavy-load cone roller design.

Adopts moderate contact angle structure, capable of bearing combined heavy radial load and unidirectional axial thrust load, stable rotation under alternating shock and forward-reverse frequent load. Fully separable split construction: inner ring + tapered rollers + cage cone assembly can be completely detached from outer cup, greatly simplifying shaft installation, disassembly and field maintenance of small gearboxes and compact transmission assemblies.

All rings and rolling elements adopt integral quenched GCr15 high-carbon chrome bearing steel, uniform roller sorting and precision raceway superfinishing, featuring high hardness, outstanding wear resistance and anti-fatigue performance. Widely applied to small industrial gear reducers, light construction machinery axles, agricultural mini harvesters, conveying equipment drive shafts and small wind power auxiliary reduction boxes.

2. Technical Specifications

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

3. Key Advantages

• Standard ISO355 T4DB compact size design, stable heavy load capacity under limited installation space, ideal matching for mini reducers and compact transmission equipment
• Separable cone & cup split structure, easy independent replacement of damaged inner or outer component without full transmission disassembly, effectively cutting maintenance downtime cost
• Precision mirror superfinished cone raceway and graded tapered rollers, low friction torque, low running noise and small temperature rise during long-time continuous operation
• Two cage optional: stamped steel cage cost-effective for general light-heavy load scenarios; solid brass cage anti-deformation for high-temperature 24h uninterrupted production lines
• Complete customizable service: C3 enlarged radial clearance, P5 high precision grade, OEM laser marking, special high-temperature anti-oxidation grease filling, neutral brand export packaging
• Strict integral quenching heat treatment process, uniform internal stress distribution, effectively delay raceway peeling and roller abrasion failure, extend overall overhaul cycle of transmission equipment

4. Applications

T4DB050 small-size heavy-duty tapered roller bearing is core replacement wear spare part for compact industrial rotary equipment:

• Small horizontal/vertical industrial gear reducers, conveyor belt head transmission support assemblies
• Light loader, mini road roller, small excavator auxiliary drive axle positioning bearing units
• Mini agricultural harvesters, small tractor heavy-duty drive shaft transmission bearings
• Small wind power auxiliary reduction box, light port lifting machinery rotary positioning components
• Textile heavy spinning machine, large industrial mixer miniature drive system wearing parts
• Aftermarket interchangeable 50mm bore ISO355 standard single row separable tapered roller bearing
• Cost-effective compact heavy-load bearing solution for small equipment OEM and machinery repair factory bulk replacement

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience for T4DB series metric separable tapered roller bearings
• T4DB050 fully dimensionally interchangeable with international ISO355 standard T4DB bearings, consistent outline size, load rating and assembly tolerance indicators
• Complete OEM & ODM customization service supporting brass cage, C3 clearance upgrade, high precision grade and special high/low temperature lubricant customization
• Full strict pre-delivery inspection: raw material hardness test, cone raceway grinding precision inspection, heavy load reciprocating impact fatigue cycle test
• Professional tapered bearing engineering team provides small shaft and housing tolerance matching installation guidance within 24 hours
• Stable mass production lines with favorable bulk wholesale prices for long-term small gearbox manufacturers, light construction machinery and agricultural equipment suppliers
• We focus on compact heavy-load design, balanced radial-axial combined load capacity, separable easy-maintenance structure and long-term win-win cooperation with global miniature transmission equipment spare parts buyers

6. Quality Control

• Raw material chemical composition and surface hardness inspection of GCr15 chrome bearing steel
• Precision turning, quenching tempering and mirror superfinishing processing for inner and outer ring cone raceways
• Standard integral stress relief quenching heat treatment process for balanced internal structural strength
• Classified targeted performance testing: T4DB050 long-cycle accelerated load aging test, high-speed low friction torque temperature rise detection
• Tapered roller sorting, steel/brass cage assembly, full dimensional and appearance re-inspection before anti-rust oil packaging and shipment
• Each batch of T4DB050 bearings passes full sampling heavy-load reciprocating rotation fatigue test to guarantee stable long-term operation inside small industrial reduction transmission equipment

7. Get a Quote Now

If you need standard T4DB050 compact heavy-load separable tapered roller bearings for small gearbox, light construction and agricultural equipment maintenance and 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 shaft & housing matching tolerance installation technical guidance from professional T4DB series tapered 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 speed & heavy-load working environment to obtain detailed formal quotation

8. FAQ

Q1: What is the structural characteristic of T4DB050 bearing?

A1: It is ISO355 metric standard separable tapered roller bearing, inner cone assembly and outer cup can be disassembled separately, convenient preload adjustment and independent component replacement during maintenance.

Q2: What loads can T4DB050 bear?

A2: It can bear combined heavy radial load plus unidirectional axial thrust load; bidirectional axial positioning requires two bearings installed back-to-back or face-to-face with reasonable preload.

Q3: What is the applicable working scenario of T4DB050?

A3: Compact installation space equipment including small gear reducers, light construction machinery axles, mini agricultural harvesters and conveying equipment drive shafts.