Introduction to UCP Series Pillow Block Bearings and HRC58 - HRC62 UCP 210 Bearing
Pillow block bearings, especially those in the UCP series, are extensively utilized in industrial settings because of their sturdy construction and adaptability. These bearings are engineered to provide support for rotating shafts and are typically housed in mounted units, making them perfect for a wide range of machinery and equipment. The UCP series is renowned for its long-lasting performance, straightforward installation process, and capacity to manage both radial and axial loads effectively.HRC is an abbreviation for Rockwell Hardness Scale C, which is used to indicate the hardness of a material.
HRC58 - HRC62 indicates that the hardness of the bearing ranges from 58 to 62 HRC. This high hardness is usually achieved by heat treatment (e.g. hardening and tempering) to ensure that the bearing has excellent wear and fatigue resistance.This hardness range is suitable for applications with high loads and high speeds.
Features: The UCP 210 bearing features a 50mm bore, cast iron housing, and self-aligning design for shaft misalignment. With 2RS or ZZ seals, it handles radial and axial loads, offering durability and easy installation for industrial applications.
Wide Applications: The UCP 210 Bearing is a reliable choice for medium-load applications across industries, offering durability, ease of installation, and adaptability to various operating conditions.
Perfect Function: Its ability to withstand heavy loads and high speeds makes it a reliable choice for demanding applications. Additionally, the sealed design of the UCP210 helps prevent contamination, extending the bearing's lifespan and reducing maintenance requirements.
Overall, the UCP series, including the UCP210 bearing, is an essential component in modern industrial machinery, offering durability, efficiency, and ease of use.
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.
Differentiation table between Pillow Block Bearings and the UCP210 Bearing:
| Category | Pillow Block Bearings (General) | UCP210 Bearing (Specific Model) |
| Structural Design | Cast iron housing + self-aligning ball bearings | Cast iron housing (standard size) + chrome steel insert with integrated seals |
| Shaft Diameter | Wide range (e.g., 12–60mm, UCP204–UCP212) | Fixed 50mm shaft diameter (standard) |
| Load Capacity | Moderate radial load; some models handle axial load | Moderate radial load (medium-to-heavy duty) |
| Sealing | Open or sealed options (varies by model) | Pre-installed rubber seals (dust/moisture resistance) |
| Applications | General industrial use (conveyors, fans, agriculture) | Compact machinery (motor bases, food processing) |
| Installation/Maintenance | Bolt-mounted; periodic lubrication required | Pre-lubricated; low-maintenance, bolt-ready design |
| Corrosion Resistance | Basic protection (cast iron housing) | Optional coatings/stainless steel (customizable) |
| Cost Efficiency | Mid-range pricing for diverse needs | Budget-friendly for reliable performance in specific scenarios |
Key Differentiators
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Self-Aligning Design: The UCP210 features a spherical outer ring, allowing it to compensate for shaft misalignment, reducing stress and wear. Standard bearings often lack this capability, leading to higher maintenance and shorter lifespan.
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Durability: With a hardness of HRC58 - HRC62, the UCP210 offers superior wear resistance and fatigue strength compared to standard bearings, making it ideal for heavy-duty applications.
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Sealing Options: The UCP210 provides advanced sealing choices like 2RS (rubber seals) or ZZ (metal shields), ensuring better protection against contaminants than standard bearings.
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Versatility: It handles both radial and axial loads efficiently, while standard bearings may struggle with combined loads.
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Ease of Installation: The UCP210’s cast iron housing and vertical mounting design simplify installation and maintenance, unlike many standard bearings.
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 |
