• THK Spherical Plain Bearing PB (Standard Type)
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THK Spherical Plain Bearing PB (Standard Type)

THK Spherical Plain Bearing PB (Standard Type)

THK PB type Spherical Plain Bearing, standard series.

Key features

  • Steel outer ring with lubrication groove and oil port
  • Spherical inner ring (SUJ2, 58HRC+, hard chrome on spherical surface) with bronze alloy bushing
  • High rigidity, excellent corrosion and wear resistance
  • Inner diameter d = 5~30mm, ball diameter 11.112~50.8mm (7/16"~2")
  • Shaft fit (inner ring rotation): m6 normal / n6 indeterminate
  • Housing fit (inner ring rotation): H7

Specifications

Outer Ring Material S35C
Inner Ring SUJ2 58HRC+ (hard chrome on spherical surface)
Bushing Bronze alloy
Shaft Fit (inner ring rotation) m6 normal / n6 indeterminate
Housing Fit (inner ring rotation) H7
PB5 THK Spherical Bearing PB5, d=5mm, D=16mm, Da=11.112mm, Cs=7840N | Inner Diameter (d): 5 mm | Outer Diameter (D): 16 mm | Outer Ring Width (B): 6.0 mm | Inner Ring Width (B1): 8 mm | Ball Diameter (Da): 11.112 mm (7/16") | Allowable Tilt Angle α1/α2/α3: 8°/13°/30° | Radial Clearance: ≤0.3 mm | Static Load Capacity (Cs): 7840 N | Mass: 8.5 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB6 THK Spherical Bearing PB6, d=6mm, D=18mm, Da=12.7mm, Cs=9800N | Inner Diameter (d): 6 mm | Outer Diameter (D): 18 mm | Outer Ring Width (B): 6.75 mm | Inner Ring Width (B1): 9 mm | Ball Diameter (Da): 12.7 mm (1/2") | Allowable Tilt Angle α1/α2/α3: 8°/13°/30° | Radial Clearance: ≤0.3 mm | Static Load Capacity (Cs): 9800 N | Mass: 13.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB8 THK Spherical Bearing PB8, d=8mm, D=22mm, Da=15.875mm, Cs=16700N | Inner Diameter (d): 8 mm | Outer Diameter (D): 22 mm | Outer Ring Width (B): 9.0 mm | Inner Ring Width (B1): 12 mm | Ball Diameter (Da): 15.875 mm (5/8") | Allowable Tilt Angle α1/α2/α3: 8°/14°/25° | Radial Clearance: ≤0.5 mm | Static Load Capacity (Cs): 16700 N | Mass: 24.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB10 THK Spherical Bearing PB10, d=10mm, D=26mm, Da=19.05mm, Cs=23500N | Inner Diameter (d): 10 mm | Outer Diameter (D): 26 mm | Outer Ring Width (B): 10.5 mm | Inner Ring Width (B1): 14 mm | Ball Diameter (Da): 19.05 mm (3/4") | Allowable Tilt Angle α1/α2/α3: 8°/14°/25° | Radial Clearance: ≤0.5 mm | Static Load Capacity (Cs): 23500 N | Mass: 39.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB12 THK Spherical Bearing PB12, d=12mm, D=30mm, Da=22.225mm, Cs=31400N | Inner Diameter (d): 12 mm | Outer Diameter (D): 30 mm | Outer Ring Width (B): 12.0 mm | Inner Ring Width (B1): 16 mm | Ball Diameter (Da): 22.225 mm (7/8") | Allowable Tilt Angle α1/α2/α3: 8°/13°/25° | Radial Clearance: ≤0.5 mm | Static Load Capacity (Cs): 31400 N | Mass: 58.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB14 THK Spherical Bearing PB14, d=14mm, D=34mm, Da=25.4mm, Cs=40200N | Inner Diameter (d): 14 mm | Outer Diameter (D): 34 mm | Outer Ring Width (B): 13.5 mm | Inner Ring Width (B1): 19 mm | Ball Diameter (Da): 25.4 mm (1") | Allowable Tilt Angle α1/α2/α3: 10°/16°/24° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 40200 N | Mass: 84.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB16 THK Spherical Bearing PB16, d=16mm, D=38mm, Da=28.575mm, Cs=50000N | Inner Diameter (d): 16 mm | Outer Diameter (D): 38 mm | Outer Ring Width (B): 15.0 mm | Inner Ring Width (B1): 21 mm | Ball Diameter (Da): 28.575 mm (1-1/8") | Allowable Tilt Angle α1/α2/α3: 9°/15°/24° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 50000 N | Mass: 111.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB18 THK Spherical Bearing PB18, d=18mm, D=42mm, Da=31.75mm, Cs=61800N | Inner Diameter (d): 18 mm | Outer Diameter (D): 42 mm | Outer Ring Width (B): 16.5 mm | Inner Ring Width (B1): 23 mm | Ball Diameter (Da): 31.75 mm (1-1/4") | Allowable Tilt Angle α1/α2/α3: 9°/15°/24° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 61800 N | Mass: 160.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB20 THK Spherical Bearing PB20, d=20mm, D=46mm, Da=34.925mm, Cs=73500N | Inner Diameter (d): 20 mm | Outer Diameter (D): 46 mm | Outer Ring Width (B): 18.0 mm | Inner Ring Width (B1): 25 mm | Ball Diameter (Da): 34.925 mm (1-3/8") | Allowable Tilt Angle α1/α2/α3: 9°/15°/24° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 73500 N | Mass: 210.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB22 THK Spherical Bearing PB22, d=22mm, D=50mm, Da=38.1mm, Cs=88200N | Inner Diameter (d): 22 mm | Outer Diameter (D): 50 mm | Outer Ring Width (B): 20.0 mm | Inner Ring Width (B1): 28 mm | Ball Diameter (Da): 38.1 mm (1-1/2") | Allowable Tilt Angle α1/α2/α3: 10°/15°/23° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 88200 N | Mass: 265.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB25 THK Spherical Bearing PB25, d=25mm, D=56mm, Da=42.862mm, Cs=111000N | Inner Diameter (d): 25 mm | Outer Diameter (D): 56 mm | Outer Ring Width (B): 22.0 mm | Inner Ring Width (B1): 31 mm | Ball Diameter (Da): 42.862 mm (1-11/16") | Allowable Tilt Angle α1/α2/α3: 9°/15°/23° | Radial Clearance: ≤0.8 mm | Static Load Capacity (Cs): 111000 N | Mass: 390.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB30 THK Spherical Bearing PB30, d=30mm, D=66mm, Da=50.8mm, Cs=148000N | Inner Diameter (d): 30 mm | Outer Diameter (D): 66 mm | Outer Ring Width (B): 25.0 mm | Inner Ring Width (B1): 37 mm | Ball Diameter (Da): 50.8 mm (2") | Allowable Tilt Angle α1/α2/α3: 10°/17°/23° | Radial Clearance: ≤0.8 mm | Static Load Capacity (Cs): 148000 N | Mass: 610.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
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12 product codes available in this family
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THK Spherical Plain Bearing PB (Standard Type)

Brand THK·Roller Guides

Available part numbers (12)

PB5, PB6, PB8, PB10, PB12, PB14, PB16, PB18, PB20, PB22 + 2 more — see full table ↓

How to order

Send the THK part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codeSpec
PB5THK Spherical Bearing PB5, d=5mm, D=16mm, Da=11.112mm, Cs=7840N | Inner Diameter (d): 5 mm | Outer Diameter (D): 16 mm | Outer Ring Width (B): 6.0 mm | Inner Ring Width (B1): 8 mm | Ball Diameter (Da): 11.112 mm (7/16") | Allowable Tilt Angle α1/α2/α3: 8°/13°/30° | Radial Clearance: ≤0.3 mm | Static Load Capacity (Cs): 7840 N | Mass: 8.5 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB6THK Spherical Bearing PB6, d=6mm, D=18mm, Da=12.7mm, Cs=9800N | Inner Diameter (d): 6 mm | Outer Diameter (D): 18 mm | Outer Ring Width (B): 6.75 mm | Inner Ring Width (B1): 9 mm | Ball Diameter (Da): 12.7 mm (1/2") | Allowable Tilt Angle α1/α2/α3: 8°/13°/30° | Radial Clearance: ≤0.3 mm | Static Load Capacity (Cs): 9800 N | Mass: 13.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB8THK Spherical Bearing PB8, d=8mm, D=22mm, Da=15.875mm, Cs=16700N | Inner Diameter (d): 8 mm | Outer Diameter (D): 22 mm | Outer Ring Width (B): 9.0 mm | Inner Ring Width (B1): 12 mm | Ball Diameter (Da): 15.875 mm (5/8") | Allowable Tilt Angle α1/α2/α3: 8°/14°/25° | Radial Clearance: ≤0.5 mm | Static Load Capacity (Cs): 16700 N | Mass: 24.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB10THK Spherical Bearing PB10, d=10mm, D=26mm, Da=19.05mm, Cs=23500N | Inner Diameter (d): 10 mm | Outer Diameter (D): 26 mm | Outer Ring Width (B): 10.5 mm | Inner Ring Width (B1): 14 mm | Ball Diameter (Da): 19.05 mm (3/4") | Allowable Tilt Angle α1/α2/α3: 8°/14°/25° | Radial Clearance: ≤0.5 mm | Static Load Capacity (Cs): 23500 N | Mass: 39.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB12THK Spherical Bearing PB12, d=12mm, D=30mm, Da=22.225mm, Cs=31400N | Inner Diameter (d): 12 mm | Outer Diameter (D): 30 mm | Outer Ring Width (B): 12.0 mm | Inner Ring Width (B1): 16 mm | Ball Diameter (Da): 22.225 mm (7/8") | Allowable Tilt Angle α1/α2/α3: 8°/13°/25° | Radial Clearance: ≤0.5 mm | Static Load Capacity (Cs): 31400 N | Mass: 58.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB14THK Spherical Bearing PB14, d=14mm, D=34mm, Da=25.4mm, Cs=40200N | Inner Diameter (d): 14 mm | Outer Diameter (D): 34 mm | Outer Ring Width (B): 13.5 mm | Inner Ring Width (B1): 19 mm | Ball Diameter (Da): 25.4 mm (1") | Allowable Tilt Angle α1/α2/α3: 10°/16°/24° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 40200 N | Mass: 84.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB16THK Spherical Bearing PB16, d=16mm, D=38mm, Da=28.575mm, Cs=50000N | Inner Diameter (d): 16 mm | Outer Diameter (D): 38 mm | Outer Ring Width (B): 15.0 mm | Inner Ring Width (B1): 21 mm | Ball Diameter (Da): 28.575 mm (1-1/8") | Allowable Tilt Angle α1/α2/α3: 9°/15°/24° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 50000 N | Mass: 111.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB18THK Spherical Bearing PB18, d=18mm, D=42mm, Da=31.75mm, Cs=61800N | Inner Diameter (d): 18 mm | Outer Diameter (D): 42 mm | Outer Ring Width (B): 16.5 mm | Inner Ring Width (B1): 23 mm | Ball Diameter (Da): 31.75 mm (1-1/4") | Allowable Tilt Angle α1/α2/α3: 9°/15°/24° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 61800 N | Mass: 160.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB20THK Spherical Bearing PB20, d=20mm, D=46mm, Da=34.925mm, Cs=73500N | Inner Diameter (d): 20 mm | Outer Diameter (D): 46 mm | Outer Ring Width (B): 18.0 mm | Inner Ring Width (B1): 25 mm | Ball Diameter (Da): 34.925 mm (1-3/8") | Allowable Tilt Angle α1/α2/α3: 9°/15°/24° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 73500 N | Mass: 210.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB22THK Spherical Bearing PB22, d=22mm, D=50mm, Da=38.1mm, Cs=88200N | Inner Diameter (d): 22 mm | Outer Diameter (D): 50 mm | Outer Ring Width (B): 20.0 mm | Inner Ring Width (B1): 28 mm | Ball Diameter (Da): 38.1 mm (1-1/2") | Allowable Tilt Angle α1/α2/α3: 10°/15°/23° | Radial Clearance: ≤0.7 mm | Static Load Capacity (Cs): 88200 N | Mass: 265.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB25THK Spherical Bearing PB25, d=25mm, D=56mm, Da=42.862mm, Cs=111000N | Inner Diameter (d): 25 mm | Outer Diameter (D): 56 mm | Outer Ring Width (B): 22.0 mm | Inner Ring Width (B1): 31 mm | Ball Diameter (Da): 42.862 mm (1-11/16") | Allowable Tilt Angle α1/α2/α3: 9°/15°/23° | Radial Clearance: ≤0.8 mm | Static Load Capacity (Cs): 111000 N | Mass: 390.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7
PB30THK Spherical Bearing PB30, d=30mm, D=66mm, Da=50.8mm, Cs=148000N | Inner Diameter (d): 30 mm | Outer Diameter (D): 66 mm | Outer Ring Width (B): 25.0 mm | Inner Ring Width (B1): 37 mm | Ball Diameter (Da): 50.8 mm (2") | Allowable Tilt Angle α1/α2/α3: 10°/17°/23° | Radial Clearance: ≤0.8 mm | Static Load Capacity (Cs): 148000 N | Mass: 610.0 g | Outer Ring Material: S35C | Inner Ring: SUJ2 58HRC+ (hard chrome on spherical surface) | Bushing: Bronze alloy | Shaft Fit (inner ring rotation): m6 normal / n6 indeterminate | Housing Fit (inner ring rotation): H7

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