JS3549A-JS3510 Automotive Bearing , JS3549A/10 Inch Tapered Roller Bearing 35*70*24.25mm

1. Product Overview

JS3549A-JS3510 is a complete single row tapered roller bearing set, composed of separable cone (inner ring JS3549A) and cup (outer ring JS3510), widely matched automotive transmission, construction machinery reducers and agricultural equipment rotating shafts. Unified metric boundary dimensions d35×D70×T25.27mm, tapered roller inclined raceway design can simultaneously bear combined radial and one-way axial load.

All cone, cup and tapered rollers adopt fully quenched GCr15 bearing steel with ultra-precision mirror grinding raceway, uniform line contact stress distribution, excellent resistance to alternating impact load during frequent start-stop operation. Equipped with precision stamped steel cage to lock tapered rollers and prevent deviation under variable load. Separable split structure facilitates independent installation of shaft and housing, convenient disassembly and maintenance of transmission assemblies. Widely used for light truck gearbox, excavator auxiliary transmission, tractor drive shaft and general industrial reduction equipment.

2. Technical Specifications

Model Complete Set: JS3549A (cone) + JS3510 (cup)
Boundary dimensions(mm): Bore d=35, Outer D=70, Total width T=25.27, Cone width B=23.5, Cup width C=19
Min fillet radius r=2.0mm, r1=1.5mm
Structure: Single row tapered roller bearing, separable cone & cup, stamped steel cage
Raw material: GCr15 high carbon chromium bearing steel for cone, cup and tapered rollers
Basic dynamic radial load Cr: 62kN
Basic static radial load C0r: 78kN
Limiting rotating speed: Grease 5500 r/min, Oil 6800 r/min
Single set net weight: 0.42kg
Axial load factor: e=0.55, Y0=0.60, Y2=1.10
Operating temperature range: -40℃ ~ 120℃
Mounting shoulder reference: da min=42mm, Da max=66.5mm
Complete gearbox installation drawings, load matching selection guide and long-cycle alternating impact durability test reports can be provided upon customer request.

3. Core Advantages

1. Separable cone & cup split structure, shaft and bearing seat can be assembled separately, greatly shorten disassembly maintenance time of automotive and engineering transmission systems.
2. Tapered roller line contact inclined raceway, simultaneously bear radial load and unidirectional axial thrust, ideal for transmission shafts with composite load.
3. Precision stamped steel cage stable limit tapered rollers, no roller skew or shedding under frequent variable impact load of vehicle gearbox shifting.
4. Full integral quenching heat treatment reaches HRC60–65 high hardness, outstanding anti-fatigue and wear resistance, extend vehicle and machinery overhaul cycle.
5. Ultra-smooth superfinished rolling surface, low friction coefficient, effectively control temperature rise during long-time continuous rotation, avoid gearbox oil temperature overheating failure.
6. Standard universal metric installation size, fully interchangeable with original JS series tapered roller bearings, no modification for existing shaft and housing during replacement.
7. Stable axial load bearing performance, paired double sets can bear bidirectional axial thrust for differential and steering shaft assemblies.
8. Comprehensive customized service: P4/P5 high precision upgrade, OEM laser marking on cup outer surface, neutral export carton anti-rust packaging, high temperature resistant extreme pressure grease pre-filling.

4. Application Scenarios

JS3549A-JS3510 single row tapered roller bearing set is core composite load rotating spare part for automotive and light industrial machinery:

• Light commercial truck, pickup main gearbox input/output shaft bearing assemblies
• Small excavator, loader auxiliary transmission and walking reducer matching units
• Farm tractor drive shaft, agricultural harvester rotating support bearing positions
• General industrial small gear reducer, conveyor heavy load transmission components
• Forklift steering axle, small engineering machinery wheel hub support bearings
• Aftermarket interchangeable JS series separable tapered roller bearing set
• Cost-effective radial-axial combined load bearing solution for auto parts factories, construction machinery OEM and vehicle maintenance factories bulk procurement.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience of JS series single row separable tapered roller bearing sets including JS3549A-JS3510
• JS3549A cone and JS3510 cup fully dimensionally interchangeable with international standard tapered roller bearings, consistent composite load rating, speed tolerance and assembly tolerance standards.
• Complete OEM & ODM customization service supporting P4 high precision grade and high temperature resistant extreme pressure grease filling.
• Strict full pre-delivery inspection flow: GCr15 raw material hardness test, tapered roller dimensional sorting screening, long-cycle radial-axial alternating impact aging test, continuous shifting fatigue wear simulation test.
• Professional tapered roller bearing engineering team provides one-on-one composite load calculation, double-set pairing scheme and gearbox shaft installation technical guidance within 24 working hours.
• Stable mass production workshop with competitive factory bulk wholesale price for mixed batch orders of complete bearing sets, long-term stable supply for global auto parts and construction machinery spare parts buyers.
• We specialize in separable cone-cup tapered roller structure, composite radial-axial load resistance design, universal interchangeable mounting dimension standard and long-term win-win cooperation with automotive and industrial transmission equipment suppliers.

6. Quality Control

• Raw material chemical composition, internal flaw and hardness inspection for GCr15 bearing steel cone, cup and tapered roller blanks
• Precision forging, multiple tempering stress relief, ultra-precision inclined raceway grinding process for cone and cup
• Tapered roller high-temperature quenching, superfinishing and high-precision automatic dimensional sorting production line
• Stamped steel cage stamping forming and automatic roller assembly process, strictly control roller assembly clearance and circumferential uniformity
• Targeted classified performance testing: JS3549A-JS3510 long-cycle composite radial-axial load aging test, repeated gearbox shifting impact fatigue test, high-temperature grease aging durability detection
• Full dimensional tolerance, surface crack and roughness recheck before anti-rust oil coating and export carton moisture-proof packaging shipment
• Every production batch of JS3549A-JS3510 bearing sets undergoes full sampling gearbox simulation rotation test to guarantee stable long-term composite radial-axial load support performance in automotive transmission and light construction machinery equipment.

7. Get A Quote Now

If you need JS3549A-JS3510 separable single row tapered roller bearing sets for light truck gearbox manufacturing, construction machinery reducer assembly and vehicle maintenance bulk matching, send your purchase inquiry directly.
You will receive full professional supporting services after submitting inquiry:

• Fast official factory sealed formal quotation reply within 24 working hours
• One-on-one composite radial-axial load calculation, double bearing pairing scheme and gearbox shaft housing installation technical guidance from professional tapered roller bearing engineers
• Customized bearing performance solutions including P4 high precision upgrade and high-temperature extreme pressure grease options
• Competitive direct factory bulk wholesale price for large-volume complete set orders
• Provide your required purchase quantity, transmission equipment type and continuous variable impact working environment to obtain detailed formal quotation document.

8. FAQ

1. Q1: What are JS3549A and JS3510 respectively?
   A1: JS3549A is the tapered roller bearing inner cone assembly with rollers and cage; JS3510 is the independent outer cup, the two parts form a complete separable tapered roller bearing set.
2. Q2: What load can JS3549A-JS3510 bear?
   A2: It can bear large radial load and one-way axial thrust simultaneously; install two sets opposite to each other to realize bidirectional axial load bearing for differential and steering shafts.
3. Q3: What are the advantages of separable cone-cup structure for gearbox maintenance?
   A3: The inner cone can be installed on the shaft first, then the outer cup pressed into the housing, easy disassembly without damaging gearbox housing and shaft journal during overhaul.