Servometer® SMC Flexible Shaft Couplings meet rigorous requirements of precision positioning and motion control instrumentation. SMC flexible shaft couplings use electrodeposited bellows technology to ensure precise measurements and tolerances with an all metal construction. Bellows couplings have zero backlash, torque ranges from 3.7 Ncm to 2471.8 Ncm, low elastic windup, zero cyclic speed variation, low side thrust, and low movement of inertia.SMC bellows couplings can be used in applications that require angular misalignment or parallel misalignment. The bellows technology offers the greatest combined misalignment value of any coupling on the market, resulting in simple installation.

Bellows Coupling Technology Comparison Chart

SMC couplings can be installed in two common configurations. Two set screw at 120 degrees apart can connect directly to customer instrumentation or an integral clamping hub can also be chosen from our standard product line. Our standard end pieces are manufactured from high strength alumimum to ensure operation in robust applications. Bore sizes are available from 2mm up to 25.4 mm (1 inch).

SMC Flexible Shaft Coupling – Set Screw Hub Design

Please review the list of our standard SMC Flexible Shaft Couplings. For more information on an individual product, click the coupling size for more product specifications such as alignment, windup, side thrust, stroke and dimensions.

Part No.Outside Dia. (mm)Overall Length (OAL) (mm)Rated Torque (in-oz)
SMC - 3016.3531.572
SMC - 3026.3522.175
SMC - 3036.3513.727
SMC - 3046.3512.199
SMC - 3059.5226.297
SMC - 3069.5221.469
SMC - 3079.5216.8914
SMC - 3089.5215.2418
SMC - 30912.7027.6133
SMC - 31012.7021.2650
SMC - 31112.7018.2165
SMC - 31219.0533.71105
SMC - 31319.0527.36140
SMC - 31419.0522.53188
SMC - 31525.4041.22152
SMC - 31625.4028.52280
SMC - 3316.3523.374
SMC - 3326.3516.897
SMC - 3336.3513.7211
SMC - 3346.3512.199
SMC - 3359.5226.2911
SMC - 3369.5221.4614
SMC - 3379.5216.8921
SMC - 3389.5214.4326
SMC - 33912.7027.6149
SMC - 34012.7021.2675
SMC - 34112.7018.2197
SMC - 34219.0533.71158
SMC - 34319.0527.36210
SMC - 34419.0521.51281
SMC - 34525.4041.22227
SMC - 34625.4028.52420
SMC - 36036.3238.351500
SMC - 37050.8054.912500
SMC - 38060.9640.644000

SMC Flexible Shaft Coupling – Intergral Clamping Hub

Please review the list of our standard SMC Flexible Shaft Couplings. For more information on an individual product, click the coupling size for more product specifications such as alignment, windup, side thrust, stroke and dimensions.

Part No.Outside Diameter (mm)Overall Length (L) (mm)Rated Torque (in-oz)
SMC - 4016.3531.572
SMC - 4026.3522.175
SMC - 4036.3518.997
SMC - 4046.3517.479
SMC - 4059.5232.487
SMC - 4069.5227.669
SMC - 4079.5223.0814
SMC - 4089.5221.4318
SMC - 40912.734.1133
SMC - 41012.727.7650
SMC - 41112.724.7165
SMC - 41219.0541.57105
SMC - 41319.0535.22140
SMC - 41419.0530.4188
SMC - 41525.447.92152
SMC - 41625.435.22280
SMC - 4316.3528.654
SMC - 4326.3522.177
SMC - 4336.3518.9911
SMC - 4346.3517.479
SMC - 4359.5232.4811
SMC - 4369.5227.6614
SMC - 4379.5223.0821
SMC - 4389.5220.6226
SMC - 43912.734.1149
SMC - 44012.727.7675
SMC - 44112.724.7197
SMC - 44219.0541.57158
SMC - 44319.0535.23210
SMC - 44419.0529.38281
SMC - 44525.447.92227
SMC - 44625.435.22420
SMC - 46036.3246.991500
SMC - 47050.862.022500
SMC - 48060.9650.744000