KD-XP0 is an inch-size Kaydon Reali-Slim four-point contact thin section ball bearing with a uniform cross section of 12.7 × 12.7 mm. The bearing features a gothic arch raceway geometry. The XP0 execution is a preloaded, zero-clearance design. A single bearing can accommodate radial, axial and moment loads simultaneously. It provides high rotational stiffness and low frictional torque, and is supplied in an open design. It is suitable for precision rotary applications such as robot joints, precision turntables, medical equipment and optical instruments.
Maximum radius of chamfer on shaft or bearing housing
KD042XP0 Thin Section Bearing
d
107.95 mm / 4.25 in
aperture
D
133.35 mm / 5.25 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 117.348 mm / 4.62 in
Inner ring flange diameter
D1
≈ 123.952 mm / 4.88 in
Outer ring flange diameter
D4
≈ 126.771 mm / 4.991 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD045XP0 Thin Section Bearing
d
114.3 mm / 4.5 in
aperture
D
139.7 mm / 5.5 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 123.698 mm / 4.87 in
Inner ring flange diameter
D1
≈ 130.302 mm / 5.13 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD047XP0 Thin Section Bearing
d
120.65 mm / 4.75 in
aperture
D
146.05 mm / 5.75 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 130.048 mm / 5.12 in
Inner ring flange diameter
D1
≈ 136.652 mm / 5.38 in
Outer ring flange diameter
D4
≈ 139.446 mm / 5.49 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD050XP0 Thin Section Bearing
d
127 mm / 5 in
aperture
D
152.4 mm / 6 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 136.398 mm / 5.37 in
Inner ring flange diameter
D1
≈ 143.002 mm / 5.63 in
Outer ring flange diameter
D4
≈ 145.796 mm / 5.74 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD055XP0 Thin Section Bearing
d
139.7 mm / 5.5 in
aperture
D
165.1 mm / 6.5 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 149.098 mm / 5.87 in
Inner ring flange diameter
D1
≈ 155.702 mm / 6.13 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD060XP0 Thin Section Bearing
d
152.4 mm / 6 in
aperture
D
177.8 mm / 7 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 161.798 mm / 6.37 in
Inner ring flange diameter
D1
≈ 168.402 mm / 6.63 in
Outer ring flange diameter
D4
≈ 171.145 mm / 6.738 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD065XP0 Thin Section Bearing
d
165.1 mm / 6.5 in
aperture
D
190.5 mm / 7.5 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 174.498 mm / 6.87 in
Inner ring flange diameter
D1
≈ 181.102 mm / 7.13 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD070XP0
KD075XP0
KD080XP0
KD090XP0
KD100XP0
KD110XP0
KD120XP0
KD070XP0 Thin Section Bearing
d
177.8 mm / 7 in
aperture
D
203.2 mm / 8 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 187.198 mm / 7.37 in
Inner ring flange diameter
D1
≈ 193.802 mm / 7.63 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD075XP0 Thin Section Bearing
d
190.5 mm / 7.5 in
aperture
D
215.9 mm / 8.5 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 199.898 mm / 7.87 in
Inner ring flange diameter
D1
≈ 206.502 mm / 8.13 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD080XP0 Thin Section Bearing
d
203.2 mm / 8 in
aperture
D
228.6 mm / 9 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 212.598 mm / 8.37 in
Inner ring flange diameter
D1
≈ 219.202 mm / 8.63 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD090XP0 Thin Section Bearing
d
228.6 mm / 9 in
aperture
D
254 mm / 10 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm /0.5 in
width
d1
≈ 237.998 mm / 9.37 in
Inner ring flange diameter
D1
≈ 244.602 mm / 9.63 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD100XP0 Thin Section Bearing
d
254 mm / 10 in
aperture
D
279.4 mm / 11 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 263.398 mm / 10.37 in
Inner ring flange diameter
D1
≈ 270.002 mm / 10.63 in
Outer ring flange diameter
D4
≈ 272.593 mm / 10.732 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD110XP0 Thin Section Bearing
d
279.4 mm / 11 in
aperture
D
304.8 mm / 12 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 288.798 mm / 11.37 in
Inner ring flange diameter
D1
≈ 295.402 mm / 11.63 in
Outer ring flange diameter
D4
≈ 297.942 mm / 11.73 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD120XP0 Thin Section Bearing
d
304.8 mm / 12 in
aperture
D
330.2 mm / 13 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 314.198 mm / 12.37 in
Inner ring flange diameter
D1
≈ 320.802 mm / 12.63 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD140XP0
KD160XP0
KD180XP0
KD200XP0
KD210XP0
KD250XP0
KD300XP0
KD140XP0 Thin Section Bearing
d
355.6 mm / 14 in
aperture
D
381 mm / 15 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 364.998 mm / 14.37 in
Inner ring flange diameter
D1
≈ 371.602 mm / 14.63 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD160XP0 Thin Section Bearing
d
406.4 mm / 16 in
aperture
D
431.8 mm / 17 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 415.798 mm / 16.37 in
Inner ring flange diameter
D1
≈ 422.402 mm / 16.63 in
Outer ring flange diameter
D4
≈ 424.637 mm / 16.718 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD180XP0 Thin Section Bearing
d
457.2 mm / 18 in
aperture
D
482.6 mm / 19 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 466.598 mm / 18.37 in
Inner ring flange diameter
D1
≈ 473.202 mm / 18.63 in
Outer ring flange diameter
D4
≈ 475.285 mm / 18.712 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD200XP0 Thin Section Bearing
d
508 mm / 20 in
aperture
D
533.4 mm / 21 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 517.398 mm / 20.37 in
Inner ring flange diameter
D1
≈ 524.002 mm / 20.63 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD210XP0 Thin Section Bearing
d
533.4 mm / 21 in
aperture
D
558.8 mm / 22 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 542.798 mm / 21.37 in
Inner ring flange diameter
D1
≈ 549.402 mm / 21.63 in
Outer ring flange diameter
D4
≈ 551.18 mm / 21.7 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD250XP0 Thin Section Bearing
d
635 mm / 25 in
aperture
D
660.4 mm / 26 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 644.398 mm / 25.37 in
Inner ring flange diameter
D1
≈ 651.002 mm / 25.63 in
Outer ring flange diameter
D4
≈ 652.475 mm / 25.688 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
KD300XP0 Thin Section Bearing
d
762 mm / 30 in
aperture
D
787.4 mm / 31 in
outer diameter
B
12.7 mm / 0.5 in
radial cross section
H
12.7 mm / 0.5 in
width
d1
≈ 771.398 mm / 30.37 in
Inner ring flange diameter
D1
≈ 778.002 mm / 30.63 in
Outer ring flange diameter
D4
≈ 779.069 mm / 30.672 in
Outer ring flange diameter
6.35 mm / 0.25 in
sphere diameter
1.524 mm / 0.06 in
Maximum radius of chamfer on shaft or bearing housing
Three main materials are used for thin Section Bearings.The standard model features high-carbon chromium bearing steel for the inner and outer rings and rolling elements, making it suitable for conventional drying conditions.The corrosion-resistant version features stainless steel inner and outer rings and rolling elements, making it suitable for humid and corrosive working environments.The ceramic hybrid version adopts a composite structure, with the inner and outer rings made of bearing steel and the rolling elements made of ceramic material, making it suitable for special working conditions such as high speed, low friction, and high temperature resistance.All cages are typically made of nylon or brass and are responsible for separating and positioning the rolling elements, providing structural support for stable bearing operation.
The precision of thin Section Bearings is divided into two levels: P5 and P4.The tolerances for the inner diameter, outer diameter, and width of P5 grade bearings are within the normal range, while the specified values for the roundness and cylindricity errors of the bearing rings are larger than those for P4.The P4 grade compresses the dimensional tolerance range and reduces the geometric error of the raceway.The P5 raceway profile deviation standard is more lenient, while the P4 raceway dimensional accuracy is higher.Both levels of precision have fixed tolerance standards, and all dimensions and geometric errors are controlled according to the corresponding level. The machining precision of the parts corresponds one-to-one with the level.The bearing precision can be selected according to different working conditions, taking into full account factors such as applicable range and cost performance.
We are a high-quality bearing manufacturer. Inquiries are welcome!
TKW is a high-end precision bearing manufacturer integrating design, R&D, and production. The company specializes in a wide range of products—including high-precision hybrid ceramic ball bearings, ultra-thin-section bearings, servo motor bearings, high-precision stainless steel bearings, vacuum pump bearings, magnetic levitation bearings, thin-walled crossed roller bearings, reactor bearings, all-ceramic bearings, bearings for the food and beverage industry, new energy vehicle bearings, excavator bearings, construction machinery bearings, and custom-engineered bearings—designed to meet the requirements of diverse operating conditions.
