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■Radial beam coupling ・Side slits absorb deviation/eccentricity ・Since it is a metal integrated type, accurate power transmission is possible, but durability is relatively poor. ・Slit structure absorbs misalignment ・Uses ultra-high strength aluminum to strengthen structural weaknesses and improve durability ■Relief structure Relief processing is applied to prevent damage due to internal interference when misalignment occurs. *Not applicable for SRB-8 products ■Slit rounding process It is rounded to avoid stress concentration from the slit. ■Structure and materials ・Main body (Material: AL-7075-T6/Surface treatment: Anodizing) ・Fastening bolt (Material: SCM435/Surface treatment: Black oxide film) ■Shaft slip torque - If the shaft slip torque is smaller than the maximum torque of the coupling, compare the shaft slip torque with the actually applied torque (check the motor specifications and load factor). - If the shaft slip torque is smaller than the actual torque used, we recommend increasing the size of the coupling or using a key for safety. ・We recommend that you test the product under the same conditions as the actual usage conditions before use.
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Applicable motor
Fastening bolt size
Fastening method
High torque (durability)
Hub material
Main use
Mass (g)
Maximum rotation speed (min^1)
Maximum torque (N m)
Misalignment tolerance Eccentricity (mm)
Misalignment tolerance end play (mm)
Misalignment tolerance value Declination angle (˚)
Model name
Moment of inertia (kg m2)
Non-aligned absorption
Oil resistance
Operating temperature
Regular torque (N m)
Slip torque by inner diameter (N m)
Standard inner diameter (mm)
Tightening bolt Tightening torque (N m)
Torsional stiffness
Torsional stiffness (N m/rad)
Vibration absorption/damping
Zero backlash (accuracy)
Inner diameter range
Outer diameter range
Electrical insulation
Part Number
SRB seriesProduct
CouplingHandling Company
Seiichi Kiko Co., Ltd.Categories
Image | Price (excluding tax) | Applicable motor | Fastening bolt size | Fastening method | High torque (durability) | Hub material | Inner diameter range | Main use | Mass (g) | Maximum rotation speed (min^1) | Maximum torque (N m) | Misalignment tolerance Eccentricity (mm) | Misalignment tolerance end play (mm) | Misalignment tolerance value Declination angle (˚) | Model name | Moment of inertia (kg m2) | Non-aligned absorption | Oil resistance | Outer diameter range | Regular torque (N m) | Standard inner diameter (mm) | Tightening bolt Tightening torque (N m) | Torsional stiffness | Torsional stiffness (N m/rad) | Zero backlash (accuracy) |
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Available upon quote | Servo, stepping, encoder: 〇 | M2~M8 | Set screw: general, keyway Clamp: General, keyway | △ | Ultra-high strength aluminum alloy, stainless steel | Ø2-Ø25 | UVW stage, XY stage, parts feeder, encoder | 1.5~500 | 8,500~50,000 | 0.2~60 | 0.1~0.3 | ±0.2~±0.5 | 2.5 | (Hub: Ultra-high strength aluminum alloy) SRB, SRB-C, SRBM, SRBM-C (Hub: stainless steel) SRBS, SRBS-C, SRBMS-C | 1.0×10^4~9.4×10^6 | 〇 | 〇 | Ø7.9-Ø60 | 0.1~30 | 2~25 | 0.3~15 | 〇 | 16~2,500 | ☆ |
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Reviews shown here are reviews of companies.