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Flexible Couplings - Bellows Type, Zero Backlash, BKL Series, (Inches).
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
Pilot bore parts can be found on the metric page here.
Days to Ship: | 5 Days or more |
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Flexible Couplings - zero backlash, EKL series, (Inches).
R+W
Features
Short overall length
Easy mounting
Vibration damping
Design
Two concentrically machined hubs with curved jaws and clamping screws, with calibrated preloaded insert
Material
Hubs: high strength aluminum
Elastomer: wear resistant thermanally stable TPU, available in 3 hardness levels
Advantage
Smooth running and reliable transmission with absorption of vibration and shock
Size 800 is available on special request.
Days to Ship: | 5 Days or more |
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Flexible Couplings - Double shoulder disc, servomotor, high torque, screw clamp type.
MISUMI
Flexible couplings with double shoulder, high torque and screw clamp fastening. This type of coupling can be selected with one or two intermediate discs, and can also be selected with a wedge slot at either or both ends.
Days to Ship: | 8 Days or more |
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Flexible Couplings - Slotted type, for servomotor, selectable fastening type.
MISUMI
Slotted type flexible couplings, for servomotor with choice of clamp or clamp fixing type. High torsional stiffness and low moment of inertia. The body material is A7075 Duraluminum. The spring is fully integrated into the coupling body thanks to the grooves.
Days to Ship: | 8 Days or more |
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Flexible Couplings - Slotted type, for low torque.
MISUMI
•Type: With Slit
•Operating Temperature Range (?): -20::80
•Allowable Torque Range (Nm): 0.05~1.00
•Allowable Lateral Misalignment Range (mm): 0.02~0.2
•Category: Coupling Main Body
Days to Ship: | 8 Days or more |
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Flexible Couplings - Double disc.
ISEL
Double disc flexible couplings. It has a selectable range for shaft diameters from 12 to 48 mm. Torsional stiffness is high due to the effectiveness of the disc.
Days to Ship: | 41 Days or more |
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Flexible Couplings - Slotted type, stainless steel.
NBK
Stainless steel grooved type flexible couplings. They feature zero backlash. The design is compact. Ideal for equipment transfer applications, XY platforms, etc.
Days to Ship: | 8 Days or more |
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Flexible Couplings - Disc, clamp-on type, MDS-C series.
NBK
Flexible disc couplings, clamping type, MDS-C series. Features high torsional rigidity, high torque and zero backlash. Compact design and short overall length. Stainless steel disc allows for eccentricity and deflection.
Days to Ship: | Same day or more |
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Show Stock Products
Flexible Couplings - Slotted type, MSXP-C series.
NBK
Flexible grooved type couplings, series MSXP-C. They have excellent electrical and chemical resistance. Ideal for use in clean rooms. The body material is made of PEEK resin.
Days to Ship: | 9 Days or more |
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Flexible Couplings - Bellows type, NB series.
Nihon Miniature Coupling
Flexible couplings, bellows type, NB series, clamp fixing system. The material is Bronze and Brass. Ideal for use to connect encoders, medical equipment and servo motors.
Days to Ship: | 9 Days or more |
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Flexible Couplings - Bellows type, NA series (collet type).
Nihon Miniature Coupling
Flexible couplings, bellows type, NB series, clamp fixing system. The material is Bronze and Brass. Ideal for use in connecting encoders, medical equipment and servo motors. The performance is the same as the NA series without collet, but this design allows easier assembly and disassembly without damaging the shaft.
Days to Ship: | 10 Days or more |
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Flexible Couplings - Oldham Type, SCZ series.
Nihon Miniature Coupling
Oldham type flexible couplings, SCZ series. Strong and compact design that can be used for high precision equipment. The moment of inertia is low, and the vibration stiffness is high. The electrical resistance is excellent.
Days to Ship: | 10 Days or more |
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Flexible Couplings - Bellows type, zero backlash, BK2 series, (Inches).
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
Sizes 200 and above are available on special request.
Pilot bore parts can be found on the metric page.here.
Days to Ship: | 21 Days |
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Flexible Couplings - Bellows type, miniature, zero backlash, MK2 series, (Inches).
R+W
Features
Low restoring forces on coupled shafts
Easy installation
Light weight and low moment of inertia
Design
Two clamping hubs concentrically mounted to flexible bellows.
Material
Bellows: high grade stainless steel
Hubs: aluminum
Advantage
Precise and well-balanced transmission with zero backlash
Pilot bore parts can be found on the metric page here.
Days to Ship: | 5 Days or more |
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Product Series |
CAD |
Days to Ship |
Specifications |
Type |
Allowable Misalignment |
Application |
Allowable Torque Range(N•m) |
For Shaft Size D1(mm) |
For Shaft Size D2(mm) |
Outer Dia. A(Ø) |
Overall Length W(mm) |
Max. Rotational Speed Range(r/min) |
Feature |
Body Material |
Category |
Allowable Torque(N•m) |
Max. Rotational Speed(r/min) |
Allowable Angular Misalignment(deg) |
Allowable Lateral Misalignment Range(mm) |
Allowable Lateral Misalignment(mm) |
Buffer Part Material |
Disc Part Material |
Bellows Part Material |
For Shaft Size D1(inch) |
For Shaft Size D2(inch) |
Brand | R+W | R+W | MISUMI | MISUMI | MISUMI | ISEL | NBK | NBK | NBK | Nihon Miniature Coupling | Nihon Miniature Coupling | Nihon Miniature Coupling | R+W | R+W |
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Product Series | Flexible Couplings - Bellows Type, Zero Backlash, BKL Series, (Inches). | Flexible Couplings - Double shoulder disc, servomotor, high torque, screw clamp type. | Flexible Couplings - Slotted type, for servomotor, selectable fastening type. | Flexible Couplings - Bellows type, zero backlash, BK2 series, (Inches). | Flexible Couplings - Bellows type, miniature, zero backlash, MK2 series, (Inches). | |||||||||
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Days to Ship | 5 Days or more | 5 Days or more | 8 Days or more | 8 Days or more | 8 Days or more | 41 Days or more | 8 Days or more |
Same day or more
Show Stock Products | 9 Days or more | 9 Days or more | 10 Days or more | 10 Days or more | 21 Days | 5 Days or more |
Specifications |
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Type | Bellows Type | Jaw Type | Disc Type | With Slit | With Slit | Disc Type | With Slit | Disc Type | With Slit | Bellows Type | Bellows Type | Oldham Type | Bellows Type | Bellows Type |
Allowable Misalignment | - | - | Angular / Eccentricity / Axial | Angular / Eccentricity / Axial | Angular / Eccentricity / Axial | Angular / Eccentricity / Axial | Angular / Axial | Angular / Eccentricity / Axial | Angular / Eccentricity / Axial | Angular / Eccentricity / Axial | Angular / Eccentricity / Axial | Angular / Eccentricity | - | - |
Application | - | Servo Motor / Stepping Motor | Standard | Servo Motor | Encoder | Standard / Servo Motor / Stepping Motor | Standard / Stepping Motor | Standard / Servo Motor / Stepping Motor | Standard | Standard | Standard | Standard | - | - |
Allowable Torque Range(N•m) | 1.01~3.00 ~ 100~less than 500 | 10.01~20.00 ~ 1000~less than 5000 | 1.01~3.00 ~ 5.01~10.00 | 0.05~1.00 ~ 1.01~3.00 | 0.05~1.00 | 50.01~100.00 ~ 100~less than 500 | 0.05~1.00 ~ 3.01~5.00 | 0.05~1.00 ~ 10.01~20.00 | 0.05~1.00 ~ 1.01~3.00 | 0.05~1.00 | 0.05~1.00 | 3.01~5.00 ~ 50.01~100.00 | 10.01~20.00 ~ 100~less than 500 | 0.05~1.00 ~ 5.01~10.00 |
For Shaft Size D1(mm) | - | - | 6 ~ 25 | 5 ~ 16 | 1.5 ~ 12 | 12 ~ 35 | 2 ~ 16 | 4 ~ 30 | 6 ~ 15 | 2 ~ 10 | 5 ~ 8 | 4 ~ 28 | - | - |
For Shaft Size D2(mm) | - | - | 6 ~ 25 | 5 ~ 16 | 1.5 ~ 12 | 14 ~ 42 | 2 ~ 16 | 4 ~ 30 | 8 ~ 15 | 2 ~ 10 | 5 ~ 8 | 4 ~ 28 | - | - |
Outer Dia. A(Ø) | 25 ~ 123 | 16 ~ 102 | 32 ~ 63 | 16 ~ 34 | 8 ~ 28 | 65 ~ 87 | 8 ~ 32 | 19 ~ 63 | 25 ~ 36 | 14 ~ 19 | 18 ~ 20 | 20 ~ 60 | 49 ~ 81 | 15 ~ 40 |
Overall Length W(mm) | 30 ~ 114 | 20 ~ 94 | 32 ~ 58 | 17.4 ~ 35 | 9 ~ 34.4 | - | 10 ~ 32 | 20 ~ 46 | 25 ~ 35 | 22 ~ 28 | 25 | 33 ~ 65 | 59 ~ 144 | 25 ~ 60 |
Max. Rotational Speed Range(r/min) | 4001~10000 | 4001~10000 ~ 10001~78000 | 4001~10000 ~ 10001~78000 | 10001~78000 | 2001~4000 ~ 10001~78000 | 4001~10000 | 10001~78000 | 4001~10000 ~ 10001~78000 | 10001~78000 | 4001~10000 | 4001~10000 | 4001~10000 | 4001~10000 | 4001~10000 |
Feature | Low Moment of Inertia ~ No Backlash | No Backlash | Low Moment of Inertia ~ No Backlash | Low Moment of Inertia ~ No Backlash | Low Moment of Inertia ~ No Backlash | High Accuracy ~ No Backlash | High Torque ~ No Backlash | No Backlash | Clean Environment ~ Vacuum Environment | High Torsional Rigidity ~ Small | High Torsional Rigidity ~ Small | High Torque ~ Small | Low Moment of Inertia ~ No Backlash | Low Moment of Inertia ~ No Backlash |
Body Material | Aluminum | Aluminum | Aluminum | Aluminum | Resin | Steel | Aluminum ~ Stainless Steel | Aluminum | Resin | Alloy | Stainless Steel | Stainless Steel | Aluminum | Aluminum |
Category | - | - | Coupling Main Body | Coupling Main Body | Coupling Main Body | Coupling Main Body | Coupling Main Body | Coupling Main Body | Coupling Main Body | Coupling Main Body | Coupling Main Body | Coupling Main Body | - | - |
Allowable Torque(N•m) | 2 ~ 500 | 1 ~ 1350 | 2 ~ 10 | 0.5 ~ 3 | 0.05 ~ 0.8 | 60 ~ 250 | 0.1 ~ 4 | 0.7 ~ 12.5 | 0.7 ~ 1.5 | 0.147 ~ 0.343 | 0.7845 | 3.432 ~ 98.067 | 15 ~ 150 | 0.5 ~ 10 |
Max. Rotational Speed(r/min) | 10000 | 8000 ~ 15000 | 10000 ~ 19000 | 18000 ~ 39000 | 4000 ~ 12000 | 6000 ~ 8000 | 19000 ~ 78000 | 10000 ~ 33000 | 17000 ~ 25000 | 5000 | 10000 | 5000 ~ 6000 | 10000 | 10,000 |
Allowable Angular Misalignment(deg) | 1 | 0.8 ~ 1.2 | 1 ~ 2 | 0.5 | 2 ~ 2.5 | 0.6 | 1 | 0.7 | 0.5 | 1.5 | 2 | 1 | 1 ~ 2 | 1 ~ 2 |
Allowable Lateral Misalignment Range(mm) | 0.02~0.2 | 0.02~0.2 ~ 0.21~0.40 | 0.02~0.2 ~ 0.21~0.40 | 0.02~0.2 | 0.02~0.2 | 0.02~0.2 | - | 0.02~0.2 | 0.02~0.2 | 0.02~0.2 | 0.02~0.2 | 1.1~3.0 | 0.02~0.2 ~ 0.41~1.0 | 0.02~0.2 ~ 0.21~0.40 |
Allowable Lateral Misalignment(mm) | 0.2 | 0.06 ~ 0.35 | 0.15 ~ 0.3 | 0.05 | 0.05 ~ 0.2 | 0.2 | - | 0.02 | 0.05 | 0.1 ~ 0.2 | 0.1 | 1.5 ~ 2 | 0.15 ~ 1 | 0.15 ~ 0.3 |
Buffer Part Material | - | Polyurethane | - | - | - | - | - | - | - | - | - | Others | - | - |
Disc Part Material | - | - | Stainless Steel | - | - | Stainless Steel | - | Stainless Steel | - | - | - | - | - | - |
Bellows Part Material | - | - | - | - | - | - | - | - | - | Phosphor Bronze | Stainless Steel | - | Stainless Steel | Stainless Steel |
For Shaft Size D1(inch) | 1 ~ 7/16 | 1 ~ 7/8 | - | - | - | - | - | - | - | - | - | - | 1 ~ 7/8 | 1/2 ~ 7/16 |
For Shaft Size D2(inch) | 1 ~ 7/16 | 1 ~ 7/8 | - | - | - | - | - | - | - | - | - | - | 1 ~ 7/8 | 1/2 ~ 7/16 |
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