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GQZ 77730 Four‑Row Tapered Roller Bearing 150×225×136mm 381030X2 Heavy‑Duty Mill Roller Bearing

Name: GQZ 77730 Four‑Row Tapered Roller Bearing 150×225×136mm 381030X2 Heavy‑Duty Mill Roller Bearing
Brand: Wuxi Guangqiang Bearing Trade Co.,Ltd
SKU: 77730
Price: 325.00 USD
Availability: InStock

Brand Name:	GQZ
Model Number:	77730
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

Size:

18*31.7*21

Outerring:

Single Or Double Piece

Gross Weight:

12.11kg

Type Of Product:

Cylindrical Roller Bearing

Type Name:

BSA210

Service:

OEM & ODM Service

Outer Diameter:

Varies (e.g., 40mm - 700mm)

System Of Measurement:

Metric

Surface Treatment:

Heat Treatment

Lead Time:

Within 3 Days

Clearanace:

C0,C2,C3,C4

Seal Type:

Open

Type Of Bearing:

BA...Z, BAM

Lubrication:

Grease / Oil

Greese:

As You Requirement, Such As SRL ,PS2, A

Productname:

Angular Contact Ball Bearing

Stock Qty:

120.pcs

Stock:

Great Supplying Ability

Stock Quantity:

6200.pcs

Warranty:

12 Months

Main Market:

UK,Spain,Japan,USA,Germany,etc

Sealing Type:

Open

Retainer:

Steel

Output:

Millimeter

Separable:

Separable, Inseparable

Axial Load Capability:

Single-direction

Industry:

Industrial Reducer Bearings

Characteristic:

High Speed And High Rigidity

Roller:

Needle Roller

Preload:

Light Preload

Inner Diameter:

55 Mm

Borediameter:

Varies (e.g., 10mm - 200mm)

Cage Material:

Metal/Brass

Hs Code:

8482800000

Bearing Number:

51117

Bore Size:

30 Mm

Origin:

Wuxi

Lubricating Method:

Grease Lubrication,oil Lubrication

Oringin:

Wuxi China

Limiting Speed:

4500 R/min

Radial Clearance:

P0,P6,P5,P4

Bearing:

751176MSP/5

Collar:

With Eccentric Collar

Outer Packaging:

Paper Box.wooden Box

Rolling Element:

Steel Ball

Ouside Diameter:

72mm

Weight:

3.5KG

Grease:

Mobil Polyrex EM,Kyodo Yushi SRL

Port:

SHANGHAI/NINGBO

Inner Height:

76mm

Sealingtype:

Open / Sealed / Shielded

Application:

Automobiles|machine Tools|motors

Loadtype:

Radial And Axial Load

Sample:

Available

Row:

Single Row

Appliexcavatorion:

Machine Tool

Bearing Type:

Tapered Roller Bearing

Trade Terms:

FOB,CFR,CIF,EXW

Vibration Level:

V2,V3

Seals:

Lip Seals On Both Sides

Precision Class:

P0, P6, P5, P4, P2

Rolling Body:

Steel Ball

Precision Level:

P0|P6|P5|P4|P2

Outerdiameter:

Varies (e.g., 30mm - 300mm)

Height:

36 Mm

Bearing Thickness:

Various (see Description)

Vibration:

Z1V1 Z2V2 Z3V3 Z4V4

Innerring:

Yes

Bearing Series:

NA6900-NA6908

Interchange:

NAX6040Z

Cage Type:

Steel/ Copper/ Nylon

Oem:

Available

Seal:

Z, ZZ, RS, 2RS

Structure:

Needl Rroller Bearing

Cagematerial:

Steel / Brass / Polyamide

Precision Industries:

P0 P6 P5 P4

Inner Dia:

260MM

Bore Siz:

35mm

Cage:

Steel

Rollershape:

Cylindrical

Clearance:

C3, C4, C2, CO, C1 C2 0 C3 C4 C5

Other Name:

Ball Roller Bearing

Apilication:

Hydraulic Pump

Quality Standard:

ISO9001:2000 Standard

Load Type:

Radial Load

Row No:

Single Row

Load Direction:

Thrust Bearing

Noise:

Z1,Z2,Z3

Noise Level:

Low

Thickness:

34mm

Original:

Wuxi

Same Bearing:

KG120CP0 Bearing

Mass:

0.3 KG

Feture:

Angle >45, But Incl. Angle = 40

Feature:

Stable Performance:low Voice

Model No:

F-682626.RNU-BNS

Separated:

Separated

Width:

Varies (e.g., 10mm - 150mm)

Precisiongrade:

P0, P6, P5, P4

Hk Series:

Open Ends

Number Of Rows:

Sealing:

Without

Delivery:

10-25 Days

Bearing Size:

38x45x12 Mm

Axialloadcapacity:

Limited Or None

Packing:

Customer Requirement

Number Of Row:

Single Row

Material:

Bearing Steel GCr15

Hardness:

HR60-65

Model:

CRB131107 CRB131310

Bearing No:

7303B

Customers:

DMG,FFG,etc

Outside Size:

7.1/2inch

Bearing Material:

Gcr15|Chrome Steel

Seals Type:

Open

Precision Rating:

P6P5P4

Type:

Thrust Bearing

Dynamic Load Capacity:

42.3 KN

Product:

Tapered Roller Bearing

Spherical:

Non-Aligning Bearings

Flange Type:

Non-Flanged Cup

Lubriexcavatore:

Oil Grease

Speedrating:

Up To 10,000 RPM

Series:

32000 Series

Temperature:

S0, S1, S2, S3, S4

Outer Dimension:

Small And Medium-Sized (60-115mm)

Packaging Details:

Standard Carton Box

Supply Ability:

1000.pcs / Month

Highlight:

Four-Row Tapered Roller Bearing 150×225×136mm

Heavy-Duty Mill Roller Bearing with Warranty

Tapered Roller Bearing 381030X2

Product Description

1. Product Overview

The 77730 four‑row tapered roller bearing, new designation 381030X2, is multi‑row heavy‑duty taper roller unit. It can bear huge combined radial and axial loads, adjustable working clearance, designed for low‑speed heavy‑impact operating conditions for metallurgical rolling mill main roller shafts.

It is widely used for steel rolling mills, heavy mining equipment and large‑size heavy‑duty industrial rotary shafts.

👉 Get a quote within 24 hours for your project

2. Technical Specifications

Model:: 77730
New Code:: 381030X2
Inner Diameter (ID):: 150 mm
Outer Diameter (OD):: 225 mm
Total Width T:: 136 mm
Structure:: Four‑row tapered roller bearing
Material:: GCr15 chrome bearing steel
Cage:: Brass machined cage
Precision Grade:: P0
Approx Net Weight:: 17.7 kg
Dynamic Load Cr:: Refer to sample datasheet
Static Load C0r:: Refer to sample datasheet
Limiting Speed(Grease):: 850 rpm

👉 Full technical data and drawings available upon request

3. Key Advantages

Four‑row roller layout realizes extremely high radial‑axial combined load‑bearing capacity
Adjustable working clearance meets strict preload requirements for mill roller shafts
Machined brass cage maintains stable performance under heavy shock and vibration
Robust integral structure adapts to severe low‑speed heavy‑duty metallurgical working environment
Interchangeable with 381030X2 industry standard replacement specifications
Custom design available (special anti‑rust treatment, OEM laser marking)

👉 Helps reduce maintenance cost and improve machine performance

4. Applications

This bearing is widely used in:

Metallurgical steel rolling mill main roller shaft assemblies
Heavy‑duty mining machinery and large‑size industrial transmission equipment
Paper‑making large roller shafts and heavy‑load continuous production machinery
Low‑speed heavy‑load rotary devices requiring multi‑row tapered roller bearing spare parts

👉 Ideal for customers looking for reliable and long‑life bearing solutions

5. Why Choose GQZ Bearing

25+ years experience in industrial bearing manufacturing
Exported to 50+ countries worldwide
Rich experience in OEM large‑size four‑row tapered roller bearing custom projects
Strict dimensional tolerance, contact angle and rotation performance inspection before shipment
Fast response within 24 hours
Stable supply for long‑term cooperation

👉 We focus on quality, reliability, and long‑term partnership

6. Quality Control

Raw material hardness inspection
Precision grinding & superfinishing raceway machining
Heat treatment metallurgy control
Contact angle, roller profile and rotation smoothness testing
Final dimensional & appearance inspection before delivery

👉 Ensuring consistent performance for every bearing

7. Get a Quote Now

Looking for a reliable bearing supplier?

👉 Send your inquiry to get:

Fast quotation within 24 hours
Technical support from engineers
Custom four‑row tapered roller bearing matching solution suggestions
Competitive factory price

👉 Click “Send Inquiry” or contact us now

Wholesale High Speed Deep Groove Ball Bearings Hybrid Ceramic Ball Bearing 625 Bearings 2RS ZZ for Mechanical 1 GQZ 77730 Four‑Row Tapered Roller Bearing 150×225×136mm 381030X2 Heavy‑Duty Mill Roller Bearing

8. FAQ

Q1: Can clearance be adjusted for 77730?

Yes, working clearance can be adjusted during installation.

Q2: What is your delivery time?

Large‑size four‑row tapered bearings:10‑18 days

Custom special specification products: depending on specifications

Q3: Do you support bulk orders?

Yes, we provide stable supply for long‑term cooperation.

Tags:

Automotive Bearings

Agriculture Bearings

Robot Bearings

Deep Groove Ball Bearing

Angular Contact Ball Bearing

Cylindrical Roller Bearing

Tapered Roller Bearing

Needle Roller Bearing

Spherical Roller Bearing

Self Aligning Ball Bearing

Thrust Ball Bearing

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Bearing Accessories

Stainless Steel Roller Chain

Mini Excavator

Automotive Bearings

Agriculture Bearings

Robot Bearings

Deep Groove Ball Bearing

Angular Contact Ball Bearing

Cylindrical Roller Bearing

Tapered Roller Bearing

Needle Roller Bearing

Spherical Roller Bearing

Self Aligning Ball Bearing

Thrust Ball Bearing

Thrust Roller Bearing

Pillow Block Bearing

Linear Ball Bearing

Track Roller Bearing

Thin Section Bearing

Slewing Ring Bearing

Spherical Plain Bearing

Ceramic Ball Bearings

Super Precision Bearings

Bearing Accessories

Stainless Steel Roller Chain

Mini Excavator

products details

GQZ 77730 Four‑Row Tapered Roller Bearing 150×225×136mm 381030X2 Heavy‑Duty Mill Roller Bearing

Four-Row Tapered Roller Bearing 150×225×136mm

Heavy-Duty Mill Roller Bearing with Warranty

Tapered Roller Bearing 381030X2