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Flexible Couplings - Bellows type, zero backlash, BKL series. (Part Numbers)

Flexible Couplings - Bellows type, zero backlash, BKL series.

R+W

R+W

Features
Easy to mount
Light weight and low moment of inertia
High torsional stiffness

Design
Two clamping hubs concentrically mounted to flexible bellows. Brief overloads of up to 1.5x the rated torque are acceptable.

Material
Bellows: high grade stainless steel
Hubs: see table

Advantage
Smooth stable running in highly dynamic and highly precise motion applications

Part Number

Configured Part Number is shown.

30
60
90
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Part Number
BKL/30/30/30
BKL/30/30/31
BKL/30/30/32
BKL/30/31/31
BKL/30/31/32
BKL/30/32/32
BKL/30/MPB/MPB
Part NumberMinimum order quantityVolume DiscountDays to Ship Allowable Torque Range
(N•m) 		For Shaft Size D1
(mm) 		For Shaft Size D2
(mm) 		Outer Dia. A
(Ø) 		Overall Length W
(mm) 		Feature Allowable Torque
(N•m) 		Moment of Inertia
(kg･m2) 		Fit Length (mm)
(mm) 		Torsional Stiffness (N-m/rad)
(N-m/rad) 		Tightening Torque of the Fastening Screw (N-m)
(N-m) 		Size
1 Piece(s)

21 Days

20.01~50.0030305668No Backlash / Low Moment of Inertia300.1226311530
1 Piece(s)

21 Days

20.01~50.0030315668No Backlash / Low Moment of Inertia300.1226311530
1 Piece(s)

21 Days

20.01~50.0030325668No Backlash / Low Moment of Inertia300.1226311530
1 Piece(s)

21 Days

20.01~50.0031315668No Backlash / Low Moment of Inertia300.1226311530
1 Piece(s)

21 Days

20.01~50.0031325668No Backlash / Low Moment of Inertia300.1226311530
1 Piece(s)

21 Days

20.01~50.0032325668No Backlash / Low Moment of Inertia300.1226311530
1 Piece(s)

5 Days

20.01~50.000-Pilot Bore0-Pilot Bore5668No Backlash / Low Moment of Inertia / Unfinished Shaft Bore300.1226311530

Loading...

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Basic Information

Type Bellows Type Max. Rotational Speed Range(r/min) 4001~10000 Body Material Aluminum
Max. Rotational Speed(r/min) 10000 Allowable Angular Misalignment(deg) 1 Allowable Lateral Misalignment Range(mm) 0.02~0.2
Allowable Lateral Misalignment(mm) 0.2 Operating Temperature Range(℃) -12::212

Configure

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277 Part Numbers

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Configure Remaining Specifications
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Specification/Dimensions

  • For Shaft Size D1(mm)

    • 0-Pilot Bore
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48
    • 49
    • 50
    • 51
    • 52
    • 53
    • 54
    • 55
    • 56
    • 57
    • 58
    • 59
    • 60
    • 61
    • 62

    Clear

  • For Shaft Size D2(mm)

    • 0-Pilot Bore
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48
    • 49
    • 50
    • 51
    • 52
    • 53
    • 54
    • 55
    • 56
    • 57
    • 58
    • 59
    • 60
    • 61
    • 62

    Clear

  • Outer Dia. A(Ø)

    • 25
    • 32
    • 40
    • 49
    • 56
    • 66
    • 82
    • 110
    • 123

    Clear

  • Overall Length W(mm)

    • 30
    • 40
    • 44
    • 58
    • 68
    • 79
    • 92
    • 109
    • 114

    Clear

  • Feature

    • No Backlash
    • Low Moment of Inertia
    • Unfinished Shaft Bore

    Clear

  • Allowable Torque(N•m)

    • 2
    • 4.5
    • 10
    • 15
    • 30
    • 60
    • 80
    • 150
    • 300
    • 500

    Clear

  • Fit Length (mm)(mm)

    • 10.5
    • 13
    • 21.5
    • 26
    • 28
    • 32.5
    • 41
    • 42.5

    Clear

  • Torsional Stiffness (N-m/rad)(N-m/rad)

    • 1.5
    • 7
    • 9
    • 23
    • 31
    • 72
    • 80
    • 141
    • 157
    • 290

    Clear

  • Tightening Torque of the Fastening Screw (N-m)(N-m)

    • 2.3
    • 4
    • 4.5
    • 8
    • 15
    • 40
    • 70
    • 85
    • 120
    • 200

    Clear

  • Size

    • 2
    • 4.5
    • 10
    • 15
    • 30
    • 60
    • 80
    • 150
    • 300
    • 500

    Clear

  • Allowable Torque Range(N•m)

    • 10.01~20.00
    • 20.01~50.00
    • 50.01~100.00
    • 100~less than 500

    Clear

  • CAD

    • 3D

    Clear

Days to Ship

    • All
    • 5 Days or Less
    • 21 Days or Less
    • 66 Days or Less

    Clear

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