Heavy Load T4DB170 Metric Precision Roller Bearing 170x230x32mm

1.Product Overview

1.Product Overview
T4DB170 is metric ISO standard T4DB series single row separable tapered roller bearing, unified core mounting dimension inner bore d=170mm, outer diameter D=230mm, inner ring width B=30mm, outer ring width C=23mm, total assembly width T=32mm, medium-large bore heavy-load design with 17.1° standard contact angleSKF 集....
Open unsealed split construction: cone assembly (inner ring + tapered rollers + steel stamping cage) and outer cup can be completely disassembled independently, convenient separate installation, preload adjustment and component replacement for large-size heavy-duty transmission assemblies. It can bear heavy combined radial load plus one-way axial thrust load; paired back-to-back/O-type mounting realizes bidirectional axial positioning and high rigidity support, stable rotation under long-time alternating heavy impact and forward-reverse frequent load.
All rings and rolling elements adopt integral quenched GCr15 high-carbon chrome bearing steel, precision logarithmic roller contact curve superfinishing and strict roller sorting, uniform internal stress distribution, outstanding wear resistance, anti-fatigue and impact resistance, low friction torque and small temperature rise under continuous heavy load operation. Widely matched for heavy industrial gear reducers, mining conveyor drive shafts, large construction machinery axles, metallurgical rolling mill auxiliary transmission assemblies and heavy truck differential support positions.

2.Technical Specifications

Model: T4DB170
Basic dimension: d=170mm, D=230mm, B=30mm, C=23mm, T=32mm
Structure: Single row separable tapered roller bearing, open without seal, steel stamping cage as standard
Raw material: GCr15 bearing steel
Cage options: Stamped steel cage / solid brass cage for high temp heavy load
Standard clearance: CN normal clearance, C3 enlarged clearance customizable
Minimum fillet radius r1,r2=r3,r4=3mm
Operating temperature range: -30℃ ~ 120℃
Net weight: 3.45 kg
Calculation dimension a=44mm, inner ring shoulder d1=197mm
Mounting limit size:
da max=182mm, db min=184mm; Da min=215mm, Da max=216mm; Db min=223mm
Ca min=6mm, Cb min=9mm; ra max=3mm, rb max=3mm
Calculation coefficient: e=0.46, axial factor Y=1.3, static axial factor Y0=0.72
Basic dynamic radial load Cr: 307 kN
Basic static radial load C0r: 440 kN
Fatigue limit load Cur: 43 kN
Grease reference speed: 2000 r/min; Grease limiting speed: 2600 r/min
Complete installation drawings, load characteristic curves and heavy impact accelerated fatigue test reports can be provided upon customer request.

3.Key Advantages

• Standard T4DB medium-large bore compact width layout, ultra-high radial-axial combined load capacity under limited axial installation space, ideal matching for heavy mining and metallurgical large transmission equipment
• Fully separable cone & cup independent split structure, damaged inner cone or outer cup can be replaced separately without overall disassembly of large transmission box, greatly cut maintenance downtime and spare part procurement cost
• Precision mirror superfinished cone 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
• Dual cage configuration options: cost-effective stamped steel cage for general intermittent heavy load working conditions; solid brass cage anti-deformation for 24h uninterrupted high-temperature harsh mining production lines
• Full customizable service support: C3 enlarged radial clearance, P5/P6 high precision grade, OEM laser marking, special high-temperature anti-oxidation grease filling, neutral export brand packaging
• Strict integral stress relief quenching heat treatment process, uniform material hardness and internal structural strength, extend equipment overall overhaul cycle by over 30% compared with ordinary low-precision tapered roller bearings
• Standard open design supports oil bath circulating lubrication, suitable for large gearboxes with built-in abundant lubricating oil circulation system, long-term stable continuous operation

4.Applications

T4DB170 open separable heavy-duty tapered roller bearing is core wear spare part for medium-large heavy industrial rotary equipment:

• Large horizontal/vertical heavy industrial gear reducers, mining belt conveyor head drive support bearing units
• Large excavator, heavy loader, road roller main drive axle positioning bearing assemblies
• Metallurgical light rolling mill auxiliary transmission shafts, large steel plant conveying roller rotary supports
• Heavy truck, engineering vehicle differential and wheel hub heavy load bearing positions
• Large wind power main auxiliary reduction box, heavy port crane lifting pulley rotary components
• Aftermarket interchangeable 170mm bore T4DB series metric separable tapered roller bearing
• Cost-effective heavy-load bearing solution for mining equipment OEM, heavy machinery repair factory and metallurgical transmission bulk matching.

5.Why Choose GQZ Bearing

• 25 years professional manufacturing experience for T4DB series large bore separable tapered roller bearings including T4DB170
• T4DB170 fully dimensionally interchangeable with international standard T4DB series bearings, consistent mounting 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 filling
• 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
• Professional tapered bearing engineering team provides large shaft and heavy housing tolerance matching installation technical guidance within 24 hours
• Stable mass production lines with favorable bulk wholesale price for long-term mining equipment manufacturers, heavy construction machinery and metallurgical transmission suppliers
• We focus on compact wide-load separable design, ultra-high radial-axial combined load capacity, easy independent maintenance structure and long-term win-win cooperation with global heavy industrial 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 tapered raceways
• Standard integral stress relief quenching heat treatment to eliminate internal processing residual stress
• Classified targeted performance testing: T4DB170 long-cycle accelerated heavy load aging test, continuous impact wear resistance test, high-speed low friction torque temperature rise detection
• Tapered roller sorting, steel/brass cage assembly, full dimensional and appearance recheck before anti-rust oil packaging and shipment
• Each batch of T4DB170 bearings passes full sampling heavy-load reciprocating rotation fatigue test to guarantee stable long-term operation inside mining, metallurgical and heavy industrial reduction transmission equipment.

7.Get a Quote Now

If you need heavy-duty open separable T4DB170 tapered roller bearings for large gearbox, mining machinery and heavy construction 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 large shaft & heavy 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 heavy-load & medium-high temperature working environment to obtain detailed formal quotation.

8.FAQ

1. Q1: What structural characteristic does T4DB170 bearing have?
   A1: It belongs to T4DB metric open separable single row tapered roller bearing, 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.
2. Q2: What loads can T4DB170 bear?
   A2: 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.
3. Q3: What industries is T4DB170 mainly applied to?
   A3: It is widely used in mining conveying equipment, heavy industrial large gearboxes, large construction machinery drive axles and metallurgical rolling mill auxiliary transmission systems.