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Kaydon Reali-Slim® sealed bearings

JB series (double sealed)
Type X – four point contact

A Conrad assembled bearing designed for applications involving multiple loads. Unique internal geometry permits application of radial load, thrust load in either direction, and moment load, individually or in any combination. A single four-point contact bearing may replace two bearings in many applications.

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Kaydon
part
number		 Dimensions in inches Capacities1 Limiting
speeds
(RPM)*		 Torque
max.
no load
(in-oz)3		 Approx.
weight
(lbs)
Bore Outside
dia.		 Land
dia.
L1		 Land
dia.
L2		 Dynamic Static2
Radial
(lbs)		 Thrust
(lbs)		 Moment
(in-lbs)		 Radial
(lbs)		 Thrust
(lbs)		 Moment
(in-lbs)
JB020XP0 2.000 2.625 2.199 2.425 758 1,130 658 930 2,340 1,080 1,500 6 0.15
JB025XP0 2.500 3.125 2.699 2.925 848 1,290 895 1,140 2,840 1,600 1,200 8 0.19
JB030XP0 3.000 3.625 3.199 3.425 933 1,440 1,159 1,340 3,350 2,220 1,000 12 0.22
JB035XP0 3.500 4.125 3.699 3.925 1,014 1,590 1,450 1,540 3,860 2,940 710 16 0.27
JB040XP0 4.000 4.625 4.199 4.425 1,091 1,720 1,764 1,750 4,370 3,770 620 20 0.30
JB042XP0 4.250 4.875 4.449 4.675 1,120 1,780 1,917 1,830 4,570 4,170 590 24 0.31
JB045XP0 4.500 5.125 4.699 4.925 1,165 1,850 2,103 1,950 4,880 4,690 550 28 0.34
JB047XP0 4.750 5.375 4.949 5.175 1,193 1,900 2,265 2,030 5,080 5,140 520 32 0.35
JB050XP0 5.000 5.625 5.199 5.425 1,236 1,980 2,463 2,150 5,380 5,720 500 36 0.37
JB055XP0 5.500 6.125 5.699 5.925 1,304 2,100 2,844 2,360 5,890 6,850 450 44 0.40
JB060XP0 6.000 6.625 6.199 6.425 1,371 2,220 3,247 2,560 6,400 8,080 410 52 0.44
JB065XP0 6.500 7.125 6.699 6.925 1,435 2,340 3,668 2,760 6,910 9,410 380 61 0.47
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Notes
1 Capacities listed are not simultaneous. For combined loading see discussion of Bearing Selection and Load Analysis in the Kaydon Reali-Slim® bearing catalog. Dynamic capacities are based upon 1 million revolutions of L10 life. Published capacities do not apply to hybrid series bearings P, X, and Y. Contact Kaydon product engineering for values.
2 Static capacities are non-brinell limits based on rigid support from the shaft and housing.
3 Torque figures shown are for single bearings with standard lubricant at room temperature and under 5 pounds thrust load.
4 "F" is the maximum shaft or housing fillet radius the bearing corners will clear.
* Values apply to bearings loaded up to 20% of their dynamic capacity.
 
Sealed series bearings are supplied with general purpose grease, satisfactory for operating temperatures of -65°F to +250°F (-54°C to +121°C). Other lubricants are available on special order.

 
Related pages
JB series (double sealed), type C
Thin section bearing selector
Reali-Slim® open & sealed bearings part number codes
Reali-Design® engineering software

Related downloads
Kaydon Reali-Slim® bearing catalog (Adobe PDF)

Adobe Acrobat Reader

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Snap-over separator
5/32" balls

JB series (double sealed), type X - four point contact, bearing profile

4F = 0.040
Bearing corners are
normally chamfered