Introduction to UCP208 Pillow Block Bearings in Industrial Applications
The UCP208 pillow block bearing is a key component in the UCP series, renowned for its durability, versatility, and ability to handle high radial loads in demanding industrial environments. Designed with a cast iron housing and a sealed outer spherical bearing, the UCP208 ensures reliable performance even under misalignment, vibration, and harsh conditions.
Key Features of the UCP208 Bearing:
- Self-Aligning Design: Accommodates shaft misalignment up to ±2°, reducing wear in applications like conveyors or agricultural machinery.
- Robust Construction: Cast iron housing provides excellent vibration damping, while double-sealed bearings (IP54 rating) protect against dust, moisture, and contaminants.
- High Load Capacity: Dynamic load rating of ~15 kN and static load rating of ~8 kN, suitable for medium-duty equipment.
- Easy Installation: Pre-lubricated and compatible with standard shaft diameters of 40 mm (1.575 inches), ensuring quick integration into existing systems.
Applications:
The UCP208 bearing excels in industries such as:
- Material Handling: Conveyor systems, bucket elevators.
- Agriculture: Harvesters, tractors.
- Food & Beverage: Hygienic environments requiring corrosion-resistant bearings.
- HVAC: Fans, blowers, and exhaust units.
- General Machinery: Pumps, compressors, and light industrial equipment.
Why Choose UCP208?
Combining cost-efficiency, low maintenance, and long service life, the UCP208 pillow block bearing is ideal for applications demanding reliability under moderate loads and misalignment. Its adaptability across sectors makes it a go-to solution for engineers prioritizing performance and durability.
Customization Welcomed:
We can print your brand (logo,artwork) on the shield or laser engraving your brand on the shield.
We can custom your packaging according to your design.
All copyright owned by clients and we promised don't disclose any information.
Packing and Shipping:
The deep groove ball bearings will be securely packaged individually, or tube packing or packed as customization packing
Shipping method is negotiable.
Other Technical Data of Bearing
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 |
| Company Brand
KYODO YUSHI | Product | Base Oil | Usage Range | Characteristics |
|
|
| EXXON | Multemp SRL | Polyol ester+Diester | (-50,+150) | Excellent noise suppressantproperty and extended performance life |
| Multemp PS
| Diester+Refined mineral oil | (-50,+130) | Excellent low temperature performance,has outstanding noise suppressant property |
| Multemp SM-B | Synthetic hydrocarbon | (-50,+200) | Long service life under high temperature,Excellent low temperature performance,has high speed operation,low noise property |
| Multemp ET-K | SyntheticEther +Polyol ester | (-40≥,+200) | Has more extended life under high operating temperature condition |
| MOBILE | Polyrex EM | Mineral grease | (-40,+180) | Long life and high temperature |
| Beacon325 | Synthetic grease | (-54,+150) | General purpose grease |
| Andok C | Channeling petroleum grease | (-27,+120) | Smooth running,long life with minimum migration |
| CHEVRON | Mobil 28(MIL-G-81322) | Synthetic hydrocarbon | (-54,+177) | Wide temperature range,good low temperature torque |
| Mobil HP | Lithium complex | (-30,+110) | Vibration,moderate speed and good corrosion resistance |
| SHELL | SRI-2 | Mineral grease | (-30,+180) | High temperature range,good water resistance |
| DUPONT | Alvania 2 | Mineral grease | (-35,+120) | Long life and high temperature |
| RLQ #2 | Mineral grease | (-50,+150) | Low noise,high speed and high temperature |
| KLUBER | ASONIC | Synthetic hydrocarbon | (-50,+140) | High temperature stability with good lubricity properties |
| JINZHI | HANGU 2# | Mineral grease | (-20,+120) | Low noise |
| HTHS | Mineral grease | (-40,+180) | High speed,low temperature,low torque and low noise |
The Radial Clearance of Bearings with Electric Motor Quality
| Bore | CM |
| Over | Including | Min | Max |
| mm | inch | mm | inch | um | um |
| 10 | 0.3937 | 18 | 0.7087 | 4 | 11 |
| 18 | 0.7087 | 24 | 0.9449 | 5 | 12 |
| 24 | 0.9449 | 30 | 1.1811 | 5 | 12 |
| 30 | 1.1811 | 40 | 1.5748 | 9 | 17 |
| 40 | 1.5748 | 50 | 1.9685 | 9 | 17 |
| 50 | 1.9685 | 65 | 2.5591 | 12 | 22 |
| Datas of The Mini-deep Groove Bearings under No Load as Followed: | Tolerance in um |
| Bore | Inch R Series | C2 | NORMAL | C3 | C4 |
| Over | Including |
| mm | inch | mm | inch | min | max | min | max | min | max | min |
| 2.5 | 0.0984 | 10 | 0.3937 | R2-R6 | 0 | 7 | 2 | 13 | 8 | 23 | 14 |
| 10 | 0.3937 | 18 | 0.7087 | R8-R10 | 0 | 9 | 3 | 18 | 11 | 25 | 18 |
| 18 | 0.7087 | 24 | 0.9449 | R12-R14 | 0 | 10 | 5 | 20 | 13 | 58 | 20 |
| 24 | 0.9449 | 30 | 1.1811 | R16-18 | 1 | 11 | 5 | 20 | 13 | 28 | 23 |
| 30 | 1.1811 | 40 | 1.5748 | R20-R24 | 1 | 11 | 6 | 20 | 15 | 33 | 28 |
| 40 | 1.5748 | 50 | 1.9685 |
| 1 | 11 | 6 | 23 | 18 | 36 | 30 |
| 50 | 1.9685 | 65 | 2.5591 |
| 1 | 12 | 8 | 28 | 23 | 43 | 38 |
| Datas of The Mini-deep Groove Bearings under No Load as Followed: | Tolerance in um |
| Clearance Code | MC1 | MC2 | MC3 | MC4 | MC5 |
| Clearance | min | max | min | max | min | max | min | max | min | max |
| 1 | 6 | 4 | 9 | 6 | 11 | 9 | 14 | 15 | 22 |
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 |
