67787-90241 Double Row TDO Tapered Roller Bearing 174.625x247.65x103.185mm

1. Product Overview

67787-90241 is heavy-duty imperial double row TDO (Tapered Double Outer) tapered roller bearing assembly, composed of two matched single cones (67787) and one double bore shared outer cup (90241), standard imperial dimension 6.875in (174.625mm) bore × 9.75in (247.65mm) OD × 4.0624in (103.185mm) total width.

Series & structure explanation:

• TDO double outer cup integrated structure, two rows of tapered rollers arranged back-to-back inside one unified outer ring, capable of bearing ultra heavy radial load and bidirectional axial thrust simultaneously, eliminate paired single-row bearing installation errors and reduce housing processing cost
• Open non-sealed design, reserved oil passage on outer cup for centralized circulating lubrication, suitable for heavy equipment with independent external lubrication system
• All cones, double cup and tapered rollers adopt carburized high toughness bearing steel, optimized logarithmic roller crowning design to avoid edge stress concentration under heavy shock load
• Standard cylindrical straight bore, steel stamped reinforced cage, stable structure under severe vibration and cyclic heavy impact. Widely used for heavy-duty truck drive axles, large mining dump wheel hubs, metallurgical rolling mill main shafts, heavy construction machinery, port bulk material transport equipment and all large load transmission systems requiring bidirectional axial positioning.

2. Technical Specifications

Mounting shoulder dimension drawings, circulating lubrication layout guide and heavy load durability test reports can be provided on customer request.

3. Core Advantages

1. Integrated TDO double outer cup double-row back-to-back layout, one unit bears bidirectional axial force and ultra-large radial load, replace two separate single-row tapered bearing matching installation, simplify assembly procedure and lower housing machining cost.
2. Optimized logarithmic crowned tapered rollers, uniform stress distribution on roller contact surface, effectively prevent edge peeling failure under heavy shock, mining and rough road impact load.
3. Carburized high toughness bearing steel rings and rollers, strong impact resistance, excellent contact fatigue performance, long service life under long-term cyclic heavy load and dusty harsh environment.
4. Double cup outer ring reserved oil hole design, smooth circulating oil channel, perfectly match external centralized lubrication system, continuously cool bearing during long-hour heavy load continuous operation.
5. Thickened reinforced stamped steel cage, firm roller positioning, not easy to deform under high temperature and strong vibration, maintain stable roller arrangement for long-term continuous operation.
6. Standard unified imperial interchangeable dimension, fully compatible with global 67787-90241 TDO bearing assemblies, direct replacement without modifying heavy vehicle and large equipment shaft & housing structure.
7. Separable cone and double cup components, convenient independent disassembly, inspection and maintenance for heavy truck axle and mining equipment overhaul work.
8. Rich customizable options: P0/P6 precision grade, C3 enlarged internal clearance group, double-sided contact sealing upgrade, OEM outer ring laser marking, neutral export anti-rust carton packaging, extreme pressure high temperature grease filling.

4. Application Scenarios

67787-90241 open TDO double row heavy-duty tapered roller bearing is ultra-large load bidirectional positioning rotary spare part for 174.625mm shaft heavy industrial & vehicle equipment:

• Heavy-duty mining dump truck, large cargo semi-trailer drive axle wheel hub assemblies
• Metallurgical hot rolling mill main transmission shaft heavy support bearing positions
• Large construction excavator, loader wheel hub and rotary support units
• Port container transporter, bulk ore long-distance transport vehicle axle assemblies
• Heavy industrial large gearbox output shaft bidirectional fixed bearing points

Aftermarket interchangeable 67700 series imperial TDO double row tapered roller bearing

Ultra heavy load bidirectional thrust integrated bearing solution for mining vehicle manufacturers, metallurgical equipment OEM factories and heavy transport machinery bulk maintenance procurement.

5. Why Choose GQZ Bearing

• We have 25 years of mature professional manufacturing experience for imperial TDO double row heavy tapered roller bearings including 67787-90241 large bore two-cone double-cup assemblies.
• Our 67787-90241 bearing sets adopt unified international ABMA standard imperial dimensions, consistent two-row dynamic/static load parameters, roller crowning grinding precision and clearance tolerance standards, fully dimensionally interchangeable with global standard brand heavy-duty TDO bearings.
• Complete OEM & ODM customized service system, supporting multi-precision grades, enlarged clearance groups, sealing structure transformation and special extreme pressure lubricant filling personalized requirements.
• Strict pre-delivery full quality inspection flow: Carburized steel raw material composition and hardness test, tapered roller automatic sorting screening, long-cycle heavy impact temperature rise rotation aging test, double cup oil passage dimensional full inspection.
• Professional heavy-duty TDO bearing technical team provides one-to-one radial-bidirectional axial combined load calculation, heavy shaft thermal expansion compensation design and circulating lubrication layout optimization tips within 24 working hours.
• Large standardized heavy roller bearing production workshop provides competitive factory direct bulk wholesale price, stable long-term mass supply for global mining vehicle, metallurgical and heavy transport machinery spare parts purchasers.
• We specialize in TDO double row ultra-heavy load tapered roller bearings, strict logarithmic roller super grinding quality control and ABMA standard interchangeable imperial dimensions, committed to long-term stable win-win cooperation with heavy-duty vehicle and large industrial transmission equipment suppliers.

6. Quality Control

• Raw material chemical composition, internal crack defect and hardness inspection for carburized GCr15 cone, double outer cup and tapered roller blanks
• Precision hot forging forming processing, multiple carburizing & stress relief tempering cycles, ultra-precision superfinishing grinding for tapered logarithmic raceway surfaces
• Tapered roller high temperature carburized quenching, mirror polishing and high precision automatic sorting production line
• Thickened steel cage stamping & riveting forming process, two-row roller assembly gap inspection, pre-filled anti-wear extreme pressure grease treatment procedure
• Targeted professional performance testing: 67787-90241 long cycle ultra-heavy load shock rotation aging test, bidirectional axial thrust fatigue durability simulation test, circulating lubrication temperature rise detection
• Comprehensive re-inspection of overall dimensional tolerance, bore roundness and outer cup oil passage smoothness before anti-rust oil coating and export moisture-proof carton packaging.

Each production batch of 67787-90241 bearing assemblies undergoes mining dump truck axle and rolling mill heavy load cycle rotation simulation test to guarantee stable low-friction bidirectional ultra-heavy load rotary support performance for 174.625mm shaft heavy transport & metallurgical transmission systems.

7. Get A Quote Now

If you need 67787-90241 174.625x247.65x103.185mm TDO double row heavy-duty tapered roller bearings for mining truck / metallurgical heavy machinery manufacturing, heavy axle assembly and large industrial equipment maintenance bulk matching, send your purchase demand directly.

Complete professional one-stop supporting services after sending inquiry:

• Formal official detailed quotation reply within 24 working hours
• One-to-one radial and bidirectional axial combined load calculation, heavy shaft thermal expansion compensation and circulating lubrication layout technical support provided by professional heavy-duty bearing engineers
• Customized bearing performance upgrade options including C3 enlarged clearance group and double-sided contact sealing transformation
• Favorable factory direct bulk wholesale price for large quantity single model orders of 67787-90241

Please provide purchase quantity, actual working conditions (ultra heavy combined load / severe vibration shock / continuous high temperature dusty environment) to obtain complete official quotation documents.

8. FAQ