Long Service Life Four-Point Contact Ball Bearing with Locating Slots Qj 1988 N2ma

• Customization: Available
• Net Weight: 64kg
• Contact Type: Four-Point Contact
• Model NO.: QJ 1988 N2MA
• Number of Rows: 1
• Bearing Outer Ring: Locating Slot
• Ring Type: Two-Piece Inner Ring and One-Piece Outer Ring
• Cage: Machined Metal
• Matched Arrangement: No
• Universal Matching Bearing: No
• Axial Internal Clearance: Cn
• Material, Bearing: Bearing Steel
• Coating: Without
• Sealing Type: Without
• Lubricant: None
• Relubrication Feature: Without
• Transport Package: Carton Packing
• Specification: 600 x 600 x 74 MM
• Trademark: SKF
• Origin: China
• HS Code: 848240
• Production Capacity: 50000
• Package Size: 61.00cm * 61.00cm * 8.00cm
• Package Gross Weight: 65.000kg

Product Description

QJ 1988 N2MA

Detailed Photos

Four-point contact ball bearings with locating slots can accommodate high axial loads in both directions and small radial loads. They can operate at very high speeds and are more suitable than deep groove ball bearings for supporting large axial forces. The outer ring, with ball and cage assembly, can be mounted separately from the two inner ring halves. The locating slots can be used to prevent the outer ring from rotating.

• High-speed capability
• Accommodate high axial loads in both directions and small radial loads
• Require considerably less axial space than double row angular contact ball bearings
• The locating slots can be used to prevent the outer ring from rotating

 

Product Description

Dimensions

Bore diameter	440 mm
Outside diameter	600 mm
Width	74 mm
Contact angle	35 °

Performance

Basic dynamic load rating	761 kN
Basic static load rating	1 900 kN
Limiting speed	1 500 r/min

Dimensions

d	440 mm	Bore diameter
D	600 mm	Outside diameter
B	74 mm	Width
d1	≈495 mm	Shoulder diameter inner ring
D1	≈544 mm	Shoulder diameter outer ring/ inner diameter housing washer
a	364 mm	Distance pressure point(s)
h	15 mm	Locating slot depth outer ring
b	12.5 mm	Locating slot width outer ring
r0	2.5 mm	Corner radius locating slot
r1,2	min.4 mm	Chamfer dimension inner ring

Abutment dimensions

da	min.458 mm	Abutment diameter shaft
Da	max.582 mm	Abutment diameter housing
ra	max.3 mm	Fillet radius

Calculation data

Basic dynamic load rating	C	761 kN
Basic static load rating	C0	1 900 kN
Fatigue load limit	Pu	35.5 kN
Limiting speed		1 500 r/min
Calculation factor	A	9.53
Limiting value	e	0.95
Calculation factor	X	0.6
Calculation factor	Y0	0.58
Calculation factor	Y1	0.66
Calculation factor	Y2	1.07

Company Profile

Guangdong Lingyi Industrial Technology Co., Ltd set up since 1997, with 20 years development, we become one of the best companies in the industry for mechanical and electrical products system integration, logistics service and investment. The company has set up 21 subsidiaries located in southern, central, eastern and northern China, .

The products categories include:

1, Transmission Products: High and low voltage electric motors, geared motors, gear boxes, bearings, inverter and complete electrical cabinets

2, Automation Products: Automation systems, motion control, low voltage control products and systems, sensor and communication products,

3, Power distribution Products: Low-voltage power distribution products, medium voltage circuit breaker, intelligent building system and equipment.

4, Machinery components.

Count on our 20 years industry experiences. Guangdong Lingyi Industrial Technology Co., Ltd give you one-stop industrial products sourcing, procurement, system integration and services, satisfy your different needs in the industry.

We are looking forward to cooperating with you.
 

Office Block

 

Warehouse Block

FAQ

1. Who are we?
We are based in Foshan, China, start from 2015,sell to DomesticMarket(89.00%),Eastem Europe(3.00%),SoutheastAsia(2.00%),SouthAmerica(2.00%),Northern Europe(1.00%),Western Europe(1.00%),Oceania(1.00%),NorthAmerica(1.00%) There are total about 11-50 people in our office.

2. How about the after services and technical?
We offer 24 hours online customer service and The technical support and guidance online.

3. How can we guarantee quality?
Always a pre-production sample before mass production,Always final Inspection by Take photo and video as your demands before shipment:We provide you 3 months guarantee for used and 1 YEAR warranty for new.

4. How about the packing when they are sent out?
In order to save the freight and reduce your budget, we choose the packaging forenvironment-friendly. We use foam board with 3 cm thick to fill in all around the box insideto protect parts, then use carton to pack the parts, but if thev are too heavy, we wilcustomized the wooden box for them.

5. What terms services can we provide?
1:Payment: T/T, Paypal, Western union, etc
2:Express: UPS,DHL,FEDEX,TNT,EMS ,etc