Product Details
Pillow Block Take-Up Mounted Ball Bearing UCF207 UCF208 Solid Cast Iron Base Self Aligning Chrome Steel Bearing
The UCF207 and UCF208 are robust pillow block bearings designed for heavy-duty applications, including garden machinery. These bearings feature a solid cast iron housing and a high-quality insert bearing, providing exceptional durability, stability, and performance in demanding environments. Below is a detailed description of their features, dimensions, and benefits for garden machinery applications.
Key Features:
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Housing Material: Made from solid cast iron, offering high strength, durability, and resistance to wear and tear.
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Insert Bearing: Equipped with a deep groove ball bearing (e.g., 6207 for UCF207, 6208 for UCF208) made from GCr15 bearing steel for superior load capacity and longevity.
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Sealing Options: Available with rubber seals (2RS) or metal shields (ZZ) to protect against contaminants and retain lubrication.
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Four-Bolt Design: Ensures secure mounting and stability, even under heavy loads and vibrations.
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Pre-Lubricated: Factory-lubricated with high-performance grease for immediate use and reduced maintenance.
Dimensions Table:
Model | Bore Diameter (d) | Outer Diameter (D) | Bearing Width (B) | Housing Dimensions (L x W x H) | Mounting Hole Spacing (A) | Mounting Hole Diameter (B) | Weight |
UCF207 | 35 mm | 72 mm | 17 mm | 140 x 90 x 55 mm | 105 mm | 14 mm | ~2.1 kg |
UCF208 | 40 mm | 80 mm | 18 mm | 150 x 100 x 60 mm | 120 mm | 14 mm | ~2.5 kg |
Advantages for Garden Machinery Applications
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Durability in Harsh Environments:
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The solid cast iron housing provides excellent resistance to impact, vibration, and environmental factors such as dirt, moisture, and temperature fluctuations.
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Ideal for outdoor use in garden machinery like lawn mowers, tillers, and trimmers.
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High Load Capacity:
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Secure Mounting:
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Low Maintenance:
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Smooth and Quiet Operation:
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Extended Service Life:
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The combination of high-quality materials, robust construction, and effective sealing ensures a long service life, even under continuous use in demanding conditions.


UCF Series Pillow Block Ball Bearings Parameters

Wide Applications of Pillow Block Bearings

Customization Welcomed:
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We can printing your brand (logo,artwork)on the shield or laser engraving your brand on the shield.
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We can custom your packaging according to your design.
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All copyright owned by clients and we promised don't disclose any information.
Packing and Shipping:
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The deep groove ball bearings will be securely packaged individually, or tube packing or packed as customization packing
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Shipping method is negotiable.

ABEC-1 Tolerance Class ABEC-1 (P0)
Inner Ring | Tolerance in um/s |
d mm | Δdmp | 9 | Vdp²)0,1 Diameter Series | 2,3,4 | Vdmp | Kia | ΔBs | Vbs |
over | including | high | low | max | max | max | high | low | max |
1)0.6 | 2.5 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | 0 | -40 | 12 |
2.5 | 10 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | 0 | -120 | 15 |
10 | 18 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | 0 | -120 | 20 |
18 | 30 | 0 | -10 | 13 | 10 | 8 | 8 | 13 | 0 | -120 | 20 |
30 | 50 | 0 | -12 | 15 | 12 | 9 | 9 | 15 | 0 | -120 | 20 |
50 | 80 | 0 | -15 | 19 | 19 | 11 | 11 | 20 | 0 | -150 | 25 |
Outer Ring | Tolerance in um/s |
D mm | Δdmp | VDp2)4)Open Bearings Diameter Series | Capped Bearings2)3) | Vdmp | Kia | ΔBs | Vbs |
9 | 0,1 | 2,3,4 | 2,3,4 |
over | including | high | low | max | max | max | high | low | max |
1)2.5 | 6 | 0 | -8 | 10 | 8 | 6 | 10 | 6 | 15 | Identical to ΔBs and VBs of inner ring of same bearing |
6 | 18 | 0 | -8 | 10 | 8 | 6 | 10 | 6 | 15 |
18 | 30 | 0 | -9 | 12 | 9 | 7 | 12 | 7 | 15 |
30 | 50 | 0 | -11 | 14 | 11 | 8 | 16 | 8 | 20 |
50 | 80 | 0 | -13 | 16 | 13 | 10 | 20 | 10 | 25 |
80 | 120 | 0 | -15 | 19 | 19 | 11 | 26 | 11 | 35 |
120 | 150 | 0 | -18 | 23 | 23 | 14 | 30 | 14 | 40 |
ABEC-3 Tolerance Class ABEC-3 (P6)
Inner Ring | Tolerance in um/s |
d mm | Δdmp | 9 | Vdp²)0,1 Diameter Series | 2,3,4 | Vdmp | Kia | ΔBs | Vbs |
over | including | high | low | max | max | max | high | low | max |
11)0.6 | 2.5 | 0 | -7 | 9 | 7 | 5 | 5 | 5 | 0 | -40 | 12 |
2.5 | 10 | 0 | -7 | 9 | 7 | 5 | 5 | 6 | 0 | -120 | 15 |
10 | 18 | 0 | -7 | 9 | 7 | 5 | 5 | 7 | 0 | -120 | 20 |
18 | 30 | 0 | -8 | 10 | 8 | 6 | 6 | 8 | 0 | -120 | 20 |
30 | 50 | 0 | -10 | 13 | 10 | 8 | 8 | 10 | 0 | -120 | 20 |
50 | 80 | 0 | -12 | 15 | 15 | 9 | 9 | 10 | 0 | -150 | 25 |
Outer Ring | Tolerance in um/s |
D mm | Δdmp | VDp2)4)Open Bearings Diameter Series | Capped Bearings2)3) | Vdmp | Kia | ΔBs | Vbs |
9 | 0,1 | 2,3,4 | 2,3,4 |
over | including | high | low | max | max | max | high | low | max |
1)2.5 | 6 | 0 | -7 | 9 | 7 | 5 | 9 | 5 | 8 | Identical to ΔBs and VBs of inner ring of same bearing |
6 | 18 | 0 | -7 | 9 | 7 | 5 | 9 | 5 | 8 |
18 | 30 | 0 | -8 | 10 | 8 | 6 | 10 | 6 | 9 |
30 | 50 | 0 | -9 | 11 | 9 | 7 | 13 | 7 | 10 |
50 | 80 | 0 | -11 | 14 | 11 | 8 | 16 | 8 | 13 |
80 | 120 | 0 | -13 | 16 | 16 | 10 | 20 | 10 | 18 |
120 | 150 | 0 | -15 | 19 | 19 | 11 | 25 | 11 | 20 |
ABEC-5 Tolerance Class ABEC-5 (P5)
Inner Ring | Tolerance in um/s |
d mm | Δdmp | Vdp²)Diameter Series | Vdmp | Kia | Sd | Sis3) | ΔBs | Vbs |
9 | 0,1,2,3,4 |
over | including | high | low | max | 3 | max | max | max | High | Low | max |
1)0.6 | 2.5 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -40 | 5 |
2.5 | 10 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -40 | 5 |
10 | 18 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -80 | 5 |
18 | 30 | 0 | -6 | 6 | 5 | 3 | 4 | 8 | 8 | 0 | -120 | 5 |
30 | 50 | 0 | -8 | 8 | 6 | 4 | 5 | 8 | 8 | 0 | -120 | 5 |
50 | 80 | 0 | -9 | 9 | 7 | 5 | 5 | 8 | 8 | 0 | -150 | 6 |
Outer Ring | Tolerance in um/s |
D mm | Δdmp | Vdp²)Diameter Series | Vdmp | Kia | SD4) SD15) | Sea4)5) | ΔBs | Vbs |
9 | 0,1,2,3,4 |
over | including | high | low | max |
| max | max | max | High | Low | max |
1)2.5 | 6 | 0 | -5 | 5 | 4 | 3 | 5 | 8 | 8 |
| 5 |
6 | 18 | 0 | -5 | 5 | 4 | 3 | 5 | 8 | 8 | 5 |
18 | 30 | 0 | -6 | 6 | 5 | 3 | 6 | 8 | 8 | 5 |
30 | 50 | 0 | -7 | 7 | 5 | 4 | 7 | 8 | 8 | 5 |
50 | 80 | 0 | -9 | 9 | 7 | 5 | 8 | 8 | 10 | 6 |
80 | 120 | 0 | -10 | 10 | 8 | 5 | 10 | 9 | 11 | 8 |
120 | 150 | 0 | -11 | 11 | 8 | 6 | 11 | 10 | 13 | 8 |
ABEC-7 Tolerance Class ABEC-7 (P4)
Inner Ring | Tolerance in um/s |
d mm | Δdmp | Δds | Vdp²)Diameter Series | Vdmp | Kia | Sd | Sia | ΔBs | Vbs |
7,8,9 | 1,7,2,3,4 |
over | including | high | low | high | low | max | max | max | max | max | High | low | Low | max |
1)0.6 | 2.5 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -40 | -40 | 2.5 |
2.5 | 10 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -40 | -40 | 2.5 |
10 | 18 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -80 | -80 | 2.5 |
18 | 30 | 0 | -5 | 0 | -5 | 5 | 4 | 2.5 | 3 | 4 | 4 | 0 | -120 | -120 | 2.5 |
30 | 50 | 0 | -6 | 0 | -5 | 6 | 4 | 3 | 4 | 4 | 4 | 0 | -120 | -120 | 3 |
50 | 80 | 0 | -7 | 0 | -5 | 7 | 5 | 3.5 | 4 | 5 | 5 | 0 | -150 | -150 | 4 |
Outer Ring | Tolerance in um/s |
D mm | Δdmp | Δds | Vdp²)Diameter Series | Vdmp | Kia | Sd | Sia | ΔBs | Vbs |
7,8,9 | 1,7,2,3,4 |
over | including | high | low | high | low | max | max | max | max | max | High | low | max |
1)2.5 | 6 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 3 | 4 | 5 | Identical to ΔBs and VBs of inner ring of same bearing | 2.5 |
6 | 18 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 3 | 4 | 5 | 2.5 |
18 | 30 | 0 | -5 | 0 | -5 | 5 | 4 | 2.5 | 4 | 4 | 5 | 2.5 |
30 | 50 | 0 | -6 | 0 | -6 | 6 | 5 | 3 | 5 | 4 | 5 | 2.5 |
50 | 80 | 0 | -7 | 0 | -7 | 7 | 5 | 3.5 | 5 | 4 | 5 | 3 |
80 | 120 | 0 | -8 | 0 | -8 | 8 | 6 | 4 | 6 | 5 | 6 | 4 |
120 | 150 | 0 | -9 | 0 | -9 | 9 | 7 | 5 | 7 | 5 | 7 | 5 |

Tolerance Data for Vibration of Single Bearing
D | V | V1 | V2 | V3 | V4 |
mm | Low | Medium | High | Low | Medium | High | Low | Medium | High | Low | Medium | High | Low | Medium | High |
3,4 | 80 | 44 | 44 | 60 | 35 | 32 | 48 | 26 | 22 | 31 | 16 | 15 | 28 | 10 | 10 |
5,6 | 110 | 72 | 60 | 74 | 48 | 40 | 58 | 36 | 30 | 35 | 21 | 18 | 32 | 11 | 11 |
7,8,9 | 130 | 96 | 80 | 92 | 66 | 54 | 72 | 48 | 40 | 44 | 28 | 24 | 38 | 12 | 12 |
10,12 | 160 | 120 | 100 | 120 | 80 | 70 | 90 | 60 | 50 | 55 | 35 | 30 | 45 | 14 | 15 |
15 | 210 | 150 | 120 | 150 | 100 | 85 | 110 | 78 | 60 | 65 | 46 | 35 | 52 | 18 | 18 |
17 | 210 | 150 | 120 | 150 | 100 | 85 | 110 | 78 | 60 | 65 | 46 | 35 | 52 | 25 | 25 |
20 | 260 | 190 | 150 | 180 | 125 | 100 | 130 | 100 | 75 | 80 | 60 | 45 | 60 | 25 | 25 |
22,25 | 260 | 190 | 150 | 180 | 125 | 100 | 130 | 100 | 75 | 80 | 60 | 45 | 60 | 30 | 32 |
28 | 260 | 190 | 150 | 180 | 125 | 100 | 130 | 100 | 75 | 80 | 60 | 45 | 60 | 35 | 40 |
30,32 | 300 | 240 | 190 | 200 | 150 | 130 | 150 | 120 | 100 | 90 | 75 | 60 | 70 | 35 | 40 |
35 | 300 | 240 | 190 | 200 | 150 | 130 | 150 | 120 | 100 | 90 | 75 | 60 | 70 | 42 | 45 |
40 | 360 | 300 | 260 | 240 | 180 | 160 | 180 | 150 | 130 | 110 | 90 | 80 | 82 | 50 | 50 |
45 | 360 | 300 | 260 | 240 | 180 | 160 | 180 | 150 | 130 | 110 | 90 | 80 | 82 | 60 | 60 |
50 | 420 | 320 | 320 | 280 | 200 | 200 | 210 | 160 | 160 | 125 | 100 | 100 | 95 | 70 | 70 |
Maximum Vibration Acceleration of Single Bearing
D | Diameter Series(0) | Diameter Series(2) | Diameter Series(3) |
mm | Z | Z1 | Z2 | Z3 | Z | Z1 | Z2 | Z3 | Z4 | Z | Z1 | Z2 | Z3 | Z4 |
3 | 35 | 34 | 32 | 28 | 36 | 35 | 32 | 30 | - | 37 | 36 | 33 | 31 | - |
4 | 35 | 34 | 32 | 28 | 36 | 35 | 32 | 30 | - | 37 | 36 | 33 | 31 | - |
5 | 37 | 36 | 34 | 30 | 38 | 37 | 34 | 32 | - | 39 | 37 | 35 | 33 | - |
6 | 37 | 36 | 34 | 30 | 38 | 37 | 34 | 32 | - | 39 | 37 | 35 | 33 | - |
7 | 39 | 38 | 35 | 31 | 40 | 38 | 36 | 34 | - | - | - | - | - | - |
8 | 39 | 38 | 35 | 31 | 40 | 38 | 36 | 34 | - | - | - | - | - | - |
9 | 41 | 40 | 36 | 32 | 42 | 40 | 37 | 35 | - | - | - | - | - | - |
10 | 43 | 42 | 38 | 33 | 44 | 42 | 39 | 35 | 30 | 37 | 44 | 40 | 37 | 32 |
12 | 44 | 43 | 39 | 34 | 45 | 43 | 39 | 35 | 30 | 47 | 45 | 40 | 37 | 32 |
15 | 45 | 44 | 40 | 35 | 46 | 44 | 41 | 36 | 31 | 48 | 46 | 42 | 38 | 33 |
17 | 46 | 44 | 40 | 35 | 47 | 45 | 41 | 36 | 31 | 49 | 47 | 42 | 38 | 33 |
20 | 47 | 45 | 41 | 36 | 48 | 46 | 42 | 38 | 33 | 50 | 48 | 43 | 39 | 34 |
22 | 47 | 45 | 41 | 36 | 48 | 46 | 42 | 38 | 33 | 50 | 48 | 43 | 39 | 34 |
25 | 48 | 46 | 42 | 38 | 49 | 47 | 43 | 40 | 36 | 51 | 49 | 44 | 41 | 37 |
28 | 49 | 47 | 43 | 39 | 50 | 48 | 44 | 41 | 37 | 52 | 50 | 45 | 42 | 38 |
30 | 49 | 47 | 43 | 39 | 50 | 48 | 44 | 41 | 37 | 52 | 50 | 45 | 42 | 38 |
32 | 50 | 48 | 44 | 40 | 51 | 49 | 45 | 42 | 38 | 53 | 51 | 46 | 43 | 39 |
35 | 51 | 49 | 45 | 41 | 52 | 50 | 46 | 43 | 39 | 54 | 52 | 47 | 44 | 40 |
40 | 53 | 51 | 46 | 42 | 54 | 52 | 47 | 44 | 40 | 56 | 54 | 49 | 45 | 41 |
45 | 55 | 53 | 48 | 45 | 56 | 54 | 49 | 46 | 43 | 58 | 56 | 51 | 47 | 44 |
50 | 57 | 54 | 50 | 47 | 58 | 55 | 51 | 48 | 45 | 60 | 57 | 53 | 49 | 46 |
55 | 59 | 56 | 52 | 49 | 60 | 57 | 53 | 50 | 47 | 62 | 59 | 54 | 51 | 48 |
60 | 61 | 58 | 54 | 51 | 62 | 59 | 54 | 51 | 48 |
| 61 | 56 | 53 | 50 |
Company Profile
We are Ningbo Kent Bearing Co., Ltd, one of the leading high-quality bearing manufacturer and
supplier, established in 2003.
We registered the BUGAO Bearing trademark in 2003 and specialize in
deep groove ball bearings
for electric motors, automobiles, household appliances, power tools,
pumps, motorcycles, heavy vehicles,
machines and more.
The company has advanced assembly production lines and perfect
quality inspection center, and we
also passed ISO 9001: 2015 quality certification. We have an annual
production capacity of 30 million sets
of high quality bearing. Because of the company currently has more
than 20 automatic production lines,
all kinds of testing equipment and inspection equipment. We have
professional and technical personnel
with senior titles accounted for 20%. And we also continue to draw
domestic and foreign professional and
technical personnel. At present, we have own R&D center, which
has always been researching new
technology and more advanced equipment on bearing production and
inspection to improve the bearing's
quality and enhance the production efficiency. We have always been
aiming to make No.1 quality bearings
in the world.