QJ312.N2.MPA Bore 360 Mm, Four Point Contact Bearings, Solid Brass Cage

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QJ312.N2.MPA

Bore Diameter:360 mm

Outside Diameter:650 mm

Width:122 mm

Weight:191.6 kg

Min. Order:1 Piece

The QJ312.N2.MPA Four-point contact ball bearings are widely used in equipment requiring space and complex load-bearing capacity, such as industrial robots (wrist joints), machine tools (rotary tables), medical equipment (CT scanner rotating frames), radar antennas, solar tracking systems, and lifting machinery.

The QJ312.N2.MPA bearing is a Four point contact bearings with an inner diameter of 360 mm , an outer diameter of 650 mm, a width of 122 mm. It typically uses PN (ABEC-1) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic radial rated load is approximately 1108171 N, its static radial rated load is approximately 2599876 N. It uses CN standard radial clearance, Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

360 mm

Outside Diameter:

650 mm

Thickness:

122 mm

Weight:

191.6 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

1108171 N

Static load Capacity, Radial (Cor):

2599876 N

Fatigue Load Limit, Radial:

66741 N

Reference speed (Grease rpm):

797

Limiting speed (Oil rpm):

1660

Specifications:

Structure:

Four-point contact ball bearings

Number of Rows:

One

Radial Clearance Trade No.:

Precision Rating:

PN (ABEC-1)

Bearing Material:

GCr15SiMn

Cage Type:

MPA = solid brass cage, outer ring guided

Seals Type:

Open

Rolling Mlement Material:

GCr15SiMn

Bore Type:

Cylindrical bore

Operating Temperature:

-30 to 200 °C

System of Measurement:

Metric

Series:

QJ12 series (QJ12..MPA)

Rolling Element:

balls

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

200 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

QJ312.N2.MPA bearings ( 360 mm x 650 mm x 122 mm) have the advantages of Bidirectional load-bearing capacity, space-saving, and high rigidity, and are therefore widely used in the Gearboxes, compressors, lifting machinery.

Part Number	QJ312.N2.MPA
Bearing Type	Four point contact bearings
Cage	MPA = solid brass cage, outer ring guided
Internal clearance	CN
Type	QJ
Heat stabilization	S1 = up to 200°C
Manufacturer Part Code	QJ1272MPA
Contact angle - α	45 °
Bearing Mass - m [lb]	422.4014
Performance
Radial Dynamic - C_r [lbf]	249116
Radial static - C_0r [lbf]	584452
Radial Fatigue - C_ur [lbf]	15003
Reference speed - n_ϑr [min^–1]	797
Limiting speed - n_G [min^–1]	1660
Dimension
Inside - d φ [inch]	14.1732
Outside - D Φ [inch]	25.5905
Width - B [inch]	4.8031
r(min.) [inch]	0.2362
D₁ [inch]	21.4252
d₁ [inch]	18.5000
a [inch]	19.8819
Mounting dimensions
d_a(min.) [inch]	15.1968
D_a(max.) [inch]	24.5669
r_a(max.) [inch]	0.1969

The QJ312.N2.MPA Four-point contact ball bearings primarily consist of an inner ring (usually a double-half inner ring or an integral one), an outer ring, steel balls, and a cage. The raceways are Gothic arched, and the steel balls form four-point contact with the inner and outer rings. Gears can be integrated into the inner and outer rings, resulting in a compact structure.

A single set of four-point contact ball bearings can simultaneously withstand radial loads, bidirectional axial loads, and overturning moments, eliminating the need for paired installation. They feature low axial height and light weight, saving installation space. They possess high rigidity and low friction characteristics, making them suitable for light to medium load conditions.

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High quality QJ312.N2.MPA ( 191.6 kg Mass, ID: 360 mm OD: 650 mm WD: 122 mm , QJ12 series (QJ12..MPA) Series , One Rows , CN Radial Clearance , PN (ABEC-1) Accuracy Class , GCr15SiMn Material , 1108171 Radial dynamic , 2599876 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. QJ312.N2.MPA. then click the button " Send " The web site will make your purchasing information sent to the supplier's mailbox, who will come to contact you upon they get your information at the first time.

QJ312.N2.MPA Bore 360 Mm, Four Point Contact Bearings, Solid Brass Cage

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