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QJ334-N2-MPA

Bore
170 mm
Outer
360 mm
Width
72 mm
Wight
38.4 kg
Four point contact bearings, holding grooves
A single bearing can replace a back-to-back assembly, saving axial space, and can withstand bidirectional axial loads and high speeds. It is suitable for applications where axial loads are the primary load, such as compressors, pumps, and gearboxes.

Main technical Specifications

New Designations :
QJ334-N2-MPA
Old Code :
QJ334N2MPA
Main demensions :
170 × 360 × 72
Bore Dia × Outside Dia × Width Dia (mm)
M :
38.4 kg
Weight
HS Code :
8482103000
Bearing customs code
ID :
170 mm
Inside diameter(I.D.)
OD :
360 mm
Outside diameter(O.D.)
T(B) :
72 mm
Thickness(W.D.)
Cr :
583.255 kN
Radial dynamic load rating
C0r :
914.166 kN
Radial static load rating
Grease rpm :
1556 r/min
Reference speed
Oil rpm :
3160 r/min
Limiting speed
Category :
Four-point contact ball bearings

Detailed parameters and installation dimensions:

Part Number QJ334-N2-MPA
RIC CN
Series QJ3 series (QJ3..-N2-MPA)
Radial Dynamic Capacity - Cr 583255 N | 131115 lbf
Radial static Capacity - C0r 914166 N | 205504 lbf
Bearing Mass - m 38.4 kg | 84.6566 lb
Bearing Type Four point contact bearings, holding grooves
Reference speed - nϑr 1556 min–1
Limiting speed - nG 3160 min–1
Row NO. One
Design N2 = Two retaining slots in outer ring
Radial Fatigue Capacity - Cur 24659 N | 5543 lbf
Cage MPA = Solid brass cage, outer ring guided
Temperature - T(min) -30 °C
Temperature - T(max) 200 °C
Contact angle - α 35 °
Angle retaining slot 45 °
Dimension Inside - d φ 170 mm | 6.6929 inch
Dimension Outside - D Φ 360 mm | 14.1732 inch
Dimension Width - B 72 mm | 2.8346 inch
Type QJ
Heat stabilization S1 = up to 200°C
Accuracy class PN (ABEC-1)
Dimension - r(min.) 4 mm | 0.1575 inch
Dimension - D1 292 mm | 11.4960 inch
Dimension - d1 238 mm | 9.3701 inch
Equivalent QJ334N2MPA
Bore Type Cylindrical bore
Dimension - a 186 mm | 7.3228 inch
Dimension - an 12.7 mm | 0.5000 inch
Dimension - bn 10.5 mm | 0.4134 inch
Dimension - rn 2 mm | 0.0787 inch
Manufacturer Part Code QJ334N2MPA
Ring Material GCr15SiMn
Seal Open
Mounting dimensions - da(min.) 187 mm | 7.3622 inch
Mounting dimensions - Da(max.) 343 mm | 13.5039 inch
Mounting dimensions - ra(max.) 3 mm | 0.1181 inch
Ball Material GCr15SiMn
Units Metric

The equivalents & Variants model of QJ334-N2-MPA Four-point contact ball bearings:

QJ334N2MPA

NOTE: All other trademarks are the property of their respective owners, used for the purpose of compatibility description and product identification only. Tradebearings is not affiliated with, endorsed by, or sponsored by the holders of these trademarks.

QJ334-N2-MPA refers to a type of QJ3 series (QJ3..-N2-MPA) large Four point contact bearings, holding grooves, with dimensions 170 mm (Bore) x 360 mm (OD) x 72 mm (Width), designed for Bidirectional load-bearing capacity, space-saving, and high rigidity, primarily used in Gearboxes, compressors, lifting machinery, Its normal operating speed can reach: the grease speed ratings: 1556 rpm, oil speed ratings: 3160 rpm, featuring One (row) construction, MPA = Solid brass cage, outer ring guided retainer to ensure extended service life, advanced Open, PN (ABEC-1) (precision) for applications High-end equipment and precision machinery. it's built to handle significant loads (dynamic radial: 583255 N, static radial: 914166 N, ), It weight approximately 38.4 kilogram.

  • Min. Order: 1 Piece/(QJ334-N2-MPA, 170 = ID, 360 = OD, 72 = B, 38.4 kg) or according to different suppliers
  • Price: Different brands, different quality, different QJ334-N2-MPA prices, different suppliers and different quality determine different prices, you can ask the supplier in detail for the price according to your own needs.
  • Precision Rating: DIN: P2~P0; ANSI: ABEC9~ABEC1; JIS: JIS~JIS0; ISO: CLASS2~NORMAL CLASS; GB/T30794 B~G
  • Inquiry ways: The right of the inquiry form, Email, skype, Whatsapp

Specifications From Tradebearings:

Reference From FAG (Schaeffler) QJ334-N2-MPA QJ3 Series Bearing, Angular Contact, Ball, Four-Point - 170 mm id x 360 mm OD x 72 mm B, Open;
Manufacturer Part Code: QJ334-N2-MPA;
Dimension Inside - id φ: 170 mm;
Dimension Outside - OD Φ: 360 mm;
Dimension Width - B: 72 mm;
Radial Internal Play: C0;
Type of Closure: Open;
Operation Temp Range: -30 to +150 °C;
Radial (Dyn.load Cr): 590000 N;
Radial (Stat.load Cor): 920000 N;
Running Accuracy Class: Not Rated;
Material of Cage: Brass;
Limiting speed (1/min): 3200 RPM;
Surface Coating: NO;
Resistance Features: Chemical Resistant;
Width Of Outer Ring: 72 mm;
Fillet Radius(ra): 3 mm;
Bearing Series: QJ3;
Standards: DIN628-4

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✨What are the Benefits of choosing QJ334-N2-MPA bearings?

  • Bidirectional Axial Load Capacity: A single bearing can withstand bidirectional axial loads, replacing two sets of angular contact ball bearings.
  • Space Saving: Significantly reduces axial footprint, resulting in a more compact structure.
  • High Axial Rigidity: Large contact angle design provides high axial stiffness and precise positioning.
  • Economical and Efficient: Reduces procurement and installation costs.
  • The QJ334-N2-MPA Four-point contact ball bearings adopts a Bidirectional load-bearing capacity, space-saving, and high rigidity design, Reference FAG technology, with dimensions an inner diameter of 170 mm, an outer diameter of 360 mm, a width of 72 mm, featuring One (row) construction from QJ3 series (QJ3..-N2-MPA) (series), optimal operating temperature is generally -30 to 200 degrees Celsius. With grade precision of PN (ABEC-1) and a clearance of CN, ensure the equipment operates more stably , and the maximum speed can reach (Limit Speed Ratings (grease) rpm:1556 Limit Speed Ratings (oil) rpm:3160)for applications High-end equipment and precision machinery

🏭 What are the applications of the QJ334-N2-MPA bearing?

  • Gearboxes/Compressors: Used in industrial speed reducers and screw compressors. A single bearing set withstands bidirectional axial forces, resulting in a compact structure.
  • Lifting/Mining: Used in crane slewing mechanisms and winches. Simultaneously withstands combined loads while saving space.
  • Machine Tools/Automation: Used in rotary tables and indexing heads. Precise bidirectional positioning and smooth operation.

Comments

  1. Wafangdian AA Bearing Trade Co.,Ltd
    Email: [email protected] Tel: 86-159-06428604 2021-12-04

    QJ334-N2-MPA Four-Point Contact Ball Bearing, Two Retaining Slots, 170 mm = Bore (d), 360 mm = D, 72 mm = B, 35 °, 915000 N = Load Capacity; Brand: Interchangeable From FAG QJ334-N2-MPA or OEM;
    Material Of Cage = Brass;
    Seal Close Type = Open;
    Max speed = 3200 rpm;
    Bearing Series = QJ3-N2;
    Operating Temperature Range = 200 °C;
    Feature = 4-Point;
    Bore Dia. (d) = 170 mm;
    Outside Dia. (D) = 360 mm;
    Number of Rows = 1;
    Width (B) = 72 mm;
    Contact Angle (α) = 35 °;
    Load Rating = 915000 N

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