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GQZ NN4934 Double‑Row Cylindrical Roller Bearing 170×230×60mm Two‑Rib Inner Ring Precision Industrial Roller Bearing

Name: GQZ NN4934 Double‑Row Cylindrical Roller Bearing 170×230×60mm Two‑Rib Inner Ring Precision Industrial Roller Bearing
Brand: Wuxi Guangqiang Bearing Trade Co.,Ltd
SKU: NN4934
Price: 1,578.00 USD
Availability: InStock

Brand Name:	GQZ
Model Number:	NN4934
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

Stock Qty:

3200.pcs

Row No:

Single Row

Size:

18*31.7*21

Hs Code:

8482800000

Bearing Size:

38x45x12 Mm

Delivery:

In Stock

Service:

OEM / ODM

Greese:

As You Requirement, Such As SRL ,PS2, A

Oringin:

Wuxi China

Clearance:

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

Outerring:

Single Or Double Piece

Type:

Roller

Bearing Thickness:

Various (see Description)

System Of Measurement:

Metric

Model:

CRB131107 CRB131310

Seals Type:

Open

Thickness:

17mm

Outside Size:

7.1/2inch

Precisiongrade:

P0, P6, P5, P4

Loadtype:

Radial Load

Inner Dia:

260MM

Bore Size:

0 - 60 Mm

Limiting Speed:

21100

Sealing:

Without

Seals:

Lip Seals On Both Sides

Gross Weight:

12.11kg

Collar:

With Eccentric Collar

Axial Load Capability:

Single-direction

Inner Diameter:

120mm

Sealingtype:

Open, Sealed, Shielded

Sample:

Available

Width:

Varies (e.g., 5mm - 30mm)

Original:

Wuxi

Height:

36 Mm

Cagematerial:

Steel, Brass, Or Polyamide

Type Of Bearing:

BA...Z, BAM

Seal:

Z, ZZ, RS, 2RS

Outer Diameter:

55mm

Model No:

F-682626.RNU-BNS

Other Name:

Ball Roller Bearing

Output:

Millimeter

Material:

Bearing Steel GCr15

Stock:

Plentiful

Weight:

3.5KG

Precision Class:

P0, P6, P5, P4, P2

Load Type:

Radial Load

Sealing Type:

Open / Shielded / Sealed

Precision Rating:

P6 P5 P4

Precision Industries:

P0 P6 P5 P4

Outer Packaging:

Paper Box.wooden Box

Hardness:

HR60-65

Innerring:

60x110x22 Mm

Origin:

Wuxi

Rolling Element:

Steel Ball

Ouside Diameter:

72mm

Cage Material:

Steel / Brass / Polyamide

Noise Level:

Low

Packaging Details:

Standard Carton Box

Supply Ability:

1000.pcs / Month

Highlight:

Double-Row Cylindrical Roller Bearing 170×230×60mm

Precision Industrial Roller Bearing two-rib inner ring

Cylindrical Roller Bearing with two-row design

Product Description

1. Product Overview

The NN4934 double‑row cylindrical roller bearing features double‑rib inner ring and separable outer ring structure. It possesses high rigidity and large radial load‑carrying capacity, outer ring can realize limited axial displacement, widely applied for large‑size precision spindles and heavy‑duty transmission shafts.

It is widely used in machine tool spindles, heavy gearboxes and metallurgical main rotary shaft assemblies.

👉 Get a quote within 24 hours for your project

2. Technical Specifications

Model: NN4934
Inner Diameter (ID): 170 mm
Outer Diameter (OD): 230 mm
Width: 60 mm
Structure: Double‑row cylindrical roller bearing, two‑rib inner ring, separable outer ring
Material: GCr15 chrome bearing steel
Cage: Machined brass cage
Clearance: Standard CN clearance
Precision Grade: P0, P4 optional
Approx Net Weight: 7.2 kg
Dynamic Load Cr: 455000 N
Static Load C0r: 810000 N
Limiting Speed(Grease): 1700 rpm

👉 Full technical data and drawings available upon request

3. Key Advantages

Double‑row roller arrangement achieves ultra‑high radial load capacity and excellent structural rigidity
Separable outer ring allows limited axial displacement to compensate shaft thermal expansion
Machined brass cage keeps stable performance under heavy load and continuous shock vibration
High precision grade optional for heavy‑duty machine tool spindle applications
Standard mounting dimensions support convenient replacement and interchangeability
Custom design available (C3 clearance, special grease, OEM laser marking)

👉 Helps reduce maintenance cost and improve machine performance

4. Applications

This bearing is widely used in:

Heavy‑duty machine tool main spindles and large precision rotary equipment
Industrial heavy gear reducers, mining transmission and metallurgical plant machinery
Paper‑making large roller shafts, cement production equipment and hoist drive assemblies
Large‑size heavy‑load mechanical spindles requiring high rigidity performance

👉 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 double‑row cylindrical roller bearing custom projects
Strict clearance, run‑out 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
Radial‑clearance testing, roller profile and rotation smoothness inspection
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 double‑row cylindrical 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 NN4934 Double‑Row Cylindrical Roller Bearing 170×230×60mm Two‑Rib Inner Ring Precision Industrial Roller Bearing

8. FAQ

Q1: Can you supply NN4934 with P4 precision grade?

Yes, P0 and P4 precision grades are available for selection.

Q2: What is your delivery time?

Standard large‑size cylindrical roller bearings: 10‑18 days

Custom high‑precision specification products: depending on specifications

Q3: Do you support bulk orders?

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

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