T4DB260 Excavator Bearing Tapered Roller Bearing 260x340x42mm

T4DB260 is large-size single row separable tapered roller bearing of DB series metric standard, unified core dimension inner bore d=260mm, outer diameter D=340mm, overall assembly width T=42mm, inner ring width B=39mm, outer ring width C=30mm, minimum fillet radius r=3mm.

DB series tapered roller structure features moderate contact angle, can simultaneously bear heavy combined radial load + unidirectional large axial thrust load, perfect for heavy equipment transmission shaft positioning. Separate assembly design: inner ring with roller & steel cage assembly can be completely split from outer ring, greatly simplifying shaft and housing installation, disassembly and on-site maintenance work.

Inner ring, outer ring and tapered rollers adopt GCr15 high-carbon chrome bearing steel integral quenching, ultra-precision grinding cone raceway to reduce friction heat and running vibration. Stamped carbon steel cage accurately locates each roller to avoid collision abrasion under alternating heavy impact load. Widely matched for metallurgical rolling equipment, mining conveyor heavy drive shafts, port lifting machinery, large gear reducers and heavy-duty engineering vehicle transmission systems.

1. Large-size heavy-load tapered roller layout, outstanding comprehensive bearing capacity for radial + unidirectional axial impact load, stable operation under long-term heavy-duty continuous working condition
2. Fully separable split structure, inner roller assembly independent from outer ring, convenient one-by-one assembly on large heavy shafts without scratching bearing raceway during installation
3. High-hardness quenched GCr15 steel rolling parts, strong anti-fatigue and anti-deformation performance, effectively resist heavy shock load from mining and metallurgy equipment
4. Optimized cone raceway grinding process, low friction coefficient, less heat accumulation during high-load rotation, reduce bearing high-temperature ablation failure risk
5. Two cage options (stamped steel / brass): steel cage cost-effective for general heavy load; brass cage anti-deformation for high-speed continuous 24h production line equipment
6. Customizable options: C3 enlarged clearance, P5 high precision grade, OEM laser marking, high-temperature resistant special grease filling

Effectively extend overhaul cycle of large metallurgical, mining and port heavy transmission equipment, reduce production shutdown maintenance loss

This T4DB260 large single row tapered roller bearing is core supporting spare part for heavy industrial rotating equipment:

• Metallurgical rolling mill auxiliary transmission shaft, steel plant heavy conveyor roller assemblies
• Underground mining heavy transport vehicle drive shaft, large mine belt conveyor head gearbox
• Port container crane, gantry crane boom rotary positioning supporting bearing units
• Large industrial heavy-duty gear reducers, wind power auxiliary speed reduction transmission parts
• Heavy engineering machinery, large loader and road roller main drive system wear spare parts
• Aftermarket interchangeable large size single row tapered roller bearing for 260mm bore heavy industrial equipment

Ideal high-load separable tapered bearing solution for metallurgy, mining and port heavy machinery maintenance

• 25 years of professional large-size DB series tapered roller bearing manufacturing experience
• T4DB260 fully dimensionally interchangeable with international standard Schaeffler DB series bearings, consistent load rating, rotation precision and assembly tolerance indicators
• Complete OEM & ODM customized service supporting brass cage, C3 clearance upgrade, high precision grade and special high/low temperature grease customization
• Full-process strict pre-delivery inspection: raw material hardness test, cone raceway grinding precision detection, heavy radial-axial combined load reciprocating fatigue cycle test
• Professional heavy bearing engineering team provides large shaft & housing tolerance matching installation guidance within 24 hours
• Stable mass production large bearing production lines with preferential bulk wholesale price for long-term metallurgy, mining and port machinery manufacturers

We focus on heavy load anti-fatigue performance, separable easy-maintenance design and long-term win-win cooperation with global heavy industrial equipment spare parts buyers

• Raw material chemical composition and surface hardness inspection of GCr15 chrome bearing steel
• Precision turning, quenching tempering and cone raceway mirror superfinishing processing for inner and outer rings
• Constant temperature stress relief heat treatment process to stabilize ring anti-deformation performance under long-term heavy alternating load
• Targeted performance testing: combined radial-axial heavy load durability test, high-speed temperature rise detection, roller sorting uniformity inspection
• Tapered roller classification, steel/brass cage assembly, full dimensional & appearance recheck before anti-rust oil packaging and shipment

Every batch of T4DB260 bearings passes full sampling heavy-load reciprocating rotation fatigue test to guarantee stable long-term operation inside heavy industrial transmission equipment

If you need heavy load separable T4DB260 single row tapered roller bearings for metallurgical rolling, mining conveyor and port crane heavy equipment maintenance, send your inquiry to us directly.

You will receive full professional supporting services after submitting inquiry:

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

Send your required purchase quantity and equipment heavy-load continuous operating environment to obtain detailed formal quotation

A1: It bears heavy radial load plus single direction axial thrust load; for bidirectional axial positioning, two sets of T4DB260 bearings need to be installed back-to-back or face-to-face.

A2: Inner ring with roller cage assembly can be separated from outer ring, convenient for assembly on super-large heavy shafts, avoid bearing surface scratch during installation and disassembly.

A3: Dedicated for large heavy industrial equipment: metallurgical rolling mills, mining conveyors, port lifting cranes, heavy gear reducers and large construction machinery drive systems.