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Additional Description
Item Details
Manufacturer:
MRC Bearing Service
Weight:
3.781 lbs.
Product Name:
7400-PJD Heavy Series Duplex Ball Bearing
Description:
Single Row Angular Contact Bearing, 45 mm ID x 120 mm OD x 29 mm Wide, Open, Standard Precision (ABEC 1), Brass / Bronze Cage, Normal Clearance (C0), 40° Contact Angle
Specifications
Inch/Metric
Metric Bore
Bore Type
Round Bore
I.D.
45 mm
O.D. [Min]
O.D. [Max]
O.D.
120 mm
Width [Min]
Width [Max]
Width
29 mm
Enclosure
Open
Rows of Balls
Single
Material
Steel
O.D. Type
Straight
Bearing Type
Angular Contact
Precision
Standard
Radial Internal Clearance Specification
Normal Clearance
Ambient Temperature Range [Min]
Ambient Temperature Range [Max]
Ball Material
Steel
Cage Type
Metal
Capacity
Standard Capacity
Contact Angle
40°
Guide Type
Lubrication
Outer Ring Width
29 mm
Precision Level
Standard (ABEC 1)
Preload Level
None
Seal Material
None
Seal Type
Unsealed
Seal Width
Dynamic Load Rating
19200 lbf
Static Load Rating [Max]
12800 lbf
Ball Dia.
Bearing Design
Bore B
Cage Material
Brass/Bronze
Collar No.
Collar O.D.
Collar Width
Corner Radius [Min]
Eccentric Collar Offset
Fillet Radius
2 mm
Flange O.D. [Max]
Flange O.D.
Flange Width [Max]
Flange Width
Flush Ground
Housing Shoulder Diameter [Min]
Housing Shoulder Diameter [Max]
Housing Shoulder Diameter
Industry Standard Part #
Inner Ring O.D.
Inner Ring Offset
Inner Ring Width
29 mm
Internal Design
Universal Mounting
Limiting Speed
Limiting Speed - Grease
5300 rpm
Limiting Speed - Oil
6900 rpm
Limiting Speed - Sealed
Locking Device
No Locking Device
Lube Hole Center
Lubricant
Oil Preservative
Misalignment Range
No. in Set
Single Bearing
No. of Balls
O.D. (B)
Outer Ring
Outer Ring Inner Diameter
Outer Ring Size
Peak Running Torque (mg-mm)
Peak Starting Torque (mg-mm)
Pre Lubricant
Preload Amount
Radial Internal Clearance
Normal
Radial Load Rating [Max]
Radial Rigidity (lbf/µm)
Reference Speed
Seal O.D.
Seal Protection Width
Seating Washer
Series
Set Screw Offset
Set Screw Size
Shaft Shoulder Diameter [Min]
Shaft Tolerance
Snap Ring
No Snap Ring
Snap Ring O.D.
Snap Ring Offset
Snap Ring Thickness
Special Features
Stamping
Static Thrust Load Rating [Max]
Temperature Range [Min]
Temperature Range [Max]
450 °F
Use With
Product Information
General
MRC angular contact bearings with a PJ suffix have one heavy race shoulder on the outer ring, opposing one heavy race shoulder and on recessed race shoulder on the inner ring. Because of this construction, it is possible for this bearing to incorporate a greater number of balls than a deep groove nonfilling notch bearing. The combination of maximum ball complement, optimum race groove depth, and the 40° contact angle results in high thrust load carrying capacity. 7000-PJ bearings are particularly suitable for positions where the thrust is always present in one direction. It should not be used where the bearing is subjected to radial load only, or combined radial and thrust load where the radial load is predominant. When heavy thrust must be taken in both directions, and angular contact bearing may be mounted in a duplex arrangement with another angular contact bearing or with a 9000-UP split inner ring bearing. 7000-PJ bearings are available with either peressed brass or machined brass, ball centered cages. The low shoulder diameters on the nonthrust sides of inner and outer rings, combined with large clearances between the land diameters and the cage, allow for large quantities of oil to flow through the bearings. The increased oil flow reduces operating temperature and theoretically increases bearing life. ABEC Grade 3 bore tolerances reduce the range of interference fits between the shaft and bearing bore. These tighter tolerances result in closer control of preload and minimize the risk of thermal runaway. 7400-PJ and PJD Series bearings are similar to the 7200-PJ and 7300-PH Series but are heavier sectioned and are used for very heavy thrust loads or combined radial and thrust loads where thrust is predominant.
