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GQZ 31308A-DF-A50-90 Pre-Matched DF Face-To-Face Tapered Roller Bearing Set 40×90×50.5mm

GQZ 31308A-DF-A50-90 Pre-Matched DF Face-To-Face Tapered Roller Bearing Set 40×90×50.5mm

Brand Name:	GQZ
Model Number:	31308ªDF.A50-90
MOQ:	100.PCS
Price:	negotiation
Delivery Time:	5 working days
Payment Terms:	T/T,Western Union,Paypal,MoneyGram

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Certification:

ISO9001/ISO14001/GJB9001

Features:

High Speed

Number:

32TM03 NX C3

Other Number:

32BCV07

Stock Qty:

125.pcs

Rollershape:

Cylindrical

Row Type:

Single

Box:

Single

Applicable Industries:

Machinery Repair Shops, Other

Salt Spay Test:

168 Hours

Row:

Single Row

Precision Level:

P0|P6|P5

Noise Standard:

Zv1 Zv2 Zv3

Bore Size:

0 - 17 Mm

Bearing Series:

32008 Taper Roller Bearing

Dimensions:

D: 50 Mm / D: 110 Mm / T: 29.25 Mm

Snap Ring:

Precision Rating:

P0 P6 P5 P4 P2

Outer Dia:

24 Mm

Hs Code:

8482300000

Other Name:

Ball Roller Bearing

Retainer:

Special Steel

Roller Bearing Type:

Taper

Internal Clearance:

Standard (or As Per Application)

Keywords:

Taper Rollerd Roller Bearings

Delivery:

In Stock

Outerside Diameter:

170mm

Noise:

Z1, Z2, Z3, Z4

Internal Diameter:

Availability:

Have Stocks

Cage Type:

Machined Brass Cage (M6)

Lubrication:

Grease Or Oil

Dimension D:

See Table

Rollingelement:

Cylindrical Rollers

Structure:

Metric Taper Roller

Bore Type:

Straight

Operatingtemperaturerange:

-30°C To 120°C

Dynamic Load:

1970N

Preload:

Light Preload

Oringin:

Wuxi China

Type:

Tapered Roller Bearing

Load Direction:

Radial Load

Item:

Deep Groove Ball Bearing

Rolling Colummn Number:

Single Row

Bearing Type:

Cylindrical Roller Bearing

Speedrating:

Up To 10,000 RPM

Outside Diameter:

52 Mm

Angle:

C/AC/A5/E/A

Rotational Speed:

60000RPM-68000RPM

Size:

230*355*145mm

Oe No:

NKS43

Precisiongrade:

P0, P6, P5, P4, P2

Designation:

NJ205EM

Rings Material:

100Cr6 / GCr15

Stock:

Rich Stock

Seals:

Open

Cage Material:

Metal|Brass

Bearing Width:

64.5 Mm

Seal Type:

Open

Speed:

14000RPM

Bearing Material:

G20Cr2Ni4A Or GCr15SiMn

Precision Industries:

P0 P6 P5 P4

Seals Type:

No Seal

Weight:

1.76kg

Cage:

Steel /Brass

Origin:

Wuxi

Material:

High Carbon Chromium Steel

Outside Size:

100 Mm

Vibration Level:

V2,V3

Market:

Global

Static Load Rating:

1630~28670, 1630~40150

Innerring:

Single Or Double Piece

Inch Dimension:

8x6.1x0.2 Inches

Outer Dimension:

Small And Medium-Sized (60-115mm)

Certifiexcavatorion:

ISO:9001

Borediameter:

Various (e.g., 20mm, 25mm, 30mm)

Outerdiameter:

Varies (e.g., 30mm - 200mm)

Original:

Wuxi

Outer Diameter:

90 Mm

Standard:

ISO 9001

Warranty:

3-6 Months

Row Number:

Double Row

Function:

Mechanical Engineering

Vibration:

Z1V1 Z2V2 Z3V3 Z4V4

Clearance:

C0|C2|C3|C4|C5

Precision:

P0, P6, P5, P4

Productname:

Tapered Roller Bearing

Port:

Shanghai/Ningbo

Seal:

Steel Shield

Package:

ORIGINAL PACKAGE

Rows Number:

Single

Supply Status:

In Stock

Quality:

High-Quality

Cagematerial:

Steel, Brass, Polyamide

Feature:

Stable Performance:low Voice

Lubriexcavatore:

Oil Grease

Dimension:

50x90x32mm

Rollerlength:

Greater Than Diameter

Thickness:

24mm

Performance:

High Speed

Stock Quantity:

48 Pcs

Product:

Tapered Roller Bearing

Model:

30205

Separable:

Yes

Sample:

Avaliable

Bearingtype:

Rolling Element Bearing

Inner Diameter:

27.5 Mm

Rolling Element:

Tapered Roller

Oem:

Available

Feture:

Angle >45, But Incl. Angle = 40

Row Structure:

Single Row

Assembly Width:

22.225 Mm

Parameters:

70x125x24 Mm

Separated:

Separated

Inside Diameter:

203.2mm

Thiness:

37 Mm

Packaging Details:

Standard Carton Box

Supply Ability:

1000.pcs / Month

Product Description

1. Product Overview

31308A-DF-A50-90 is factory pre-matched double 31308A single row tapered roller bearings arranged in DF face-to-face (X-type) configuration.

A = reinforced high contact angle design for greater axial load capacity
DF = Face-to-face matched assembly
A50-90 = standardized spacer / mounting dimension designation for original equipment interchange
This matched set simultaneously bears heavy radial load and bidirectional axial thrust, improves system rigidity and resists shaft deflection. Open design supports convenient re-lubrication maintenance. Widely fitted on heavy-duty gearboxes, vehicle drive axles, construction machinery reducers and medium-high speed rotary transmission assemblies.

Formal quotation will be sent within 24 hours upon your inquiry.

2. Technical Specifications

Model: 31308A-DF-A50-90
Single unit reference: 31308A
Overall dimensions: d40 mm, D90 mm, total width 2T=50.5 mm
Single 31308A size: 40×90×25.25 mm
Net weight: approx 1.52 kg
Structure: Two matched single row tapered roller bearings, DF face-to-face arrangement
Material: GCr15 bearing chrome steel, pressed steel cage
Contact angle: Large angle 313 series, excellent axial load performance
Additional info: Complete dimension drawings and load data available on request.

3. Core Advantages

Factory pre-matched DF set, guaranteed mounting preload consistency, no on-site manual matching required
Face-to-face layout provides higher rigidity, effectively reduces shaft bending deflection
Large contact angle 31308A structure withstands heavy bidirectional axial and combined radial loads
Standard OE dimension A50-90, direct interchange for original equipment
Separable cone and cup structure facilitates assembly, inspection and replacement
Customizable: OEM laser marking, heavy-duty extreme pressure grease, P6/P5 precision grade

4. Application Scenarios

Heavy-duty industrial gearboxes and vehicle differential drive assemblies
Construction machinery, agricultural equipment main transmission shafts
Screw compressors, large fan drive units
Mining machinery reducers and medium-high speed rotary equipment
Transmission positions subject to alternating bidirectional axial forces

5. Why Choose GQZ Bearing

25 years professional bearing manufacturer, products exported globally.
Strict raw material inspection and precision grinding process.
Professional matched bearing pairing control.
24-hour technical support for DF/DB/DT arrangement consultation.
Ample stock for machinery distributors.
Precise dimensions and stable service performance.

6. Quality Control Process

GCr15 raw material quenching & tempering treatment
Precision superfinishing for raceways and tapered rollers
Strict matched group clearance & preload testing
Dimension tolerance and rotational noise inspection

7. Request Quotation

If you need 31308A-DF-A50-90 tapered roller bearing sets:

Send inquiry to obtain below supports:

Quick quotation within 24 hours
Alternative DB back-to-back matched version consultation
Competitive factory direct price
Contact our sales team for full datasheets and formal offer.

8. FAQ

Q1: Suffix explanation: 31308A = reinforced single tapered roller bearing;; DF = Face-to-face (X arrangement) paired;; A50-90 = OEM standard matched set marking for interchange.
Q2: Main overall dimensions of 31308A-DF-A50-90?: 40×90×50.5 mm matched bearing assembly.
Q3: DF vs DB difference?: DF face-to-face: wider load support span, sensitive to housing misalignment;

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products details

GQZ 31308A-DF-A50-90 Pre-Matched DF Face-To-Face Tapered Roller Bearing Set 40×90×50.5mm