SMC's MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles.  The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series.  Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16

SMC's MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles.  The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series.  Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16

SMC's MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles.  The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series.  Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16

SMC's MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles.  The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series.  Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16

SMC's MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles.  The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series.  Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16

SMC's MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles.  The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series.  Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16

SMCs MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles. The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series. Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16, 20

SMCs MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles. The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series. Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16, 20

3

C 1 B A Basic (mm) (mm) T 9 10.5 MKB20-Z MKB25-Z Model Yh9 18 23 A B C E F G 36 40 47 52 36 40 35.5 40.5 18 21 17.9 22.5 S 28 27.5 Clamp stroke Model Rod state 0 0.043 0 0.052 20 mm Q R 112.5 142 113.5 143 30 mm Q R 132.5 172 133.5 173 10 mm Q R 92.5 112 93.5 113 Retracted Extended Retracted Extended MKB20-Z 72 82 92 MKB25-Z 73 83 93 Note) The above figure is with the auto switch (D-M9) mounted

MK

MKB20 A 0 0.052 0 0.052 0.15 0.15 4 31 62 72.5 24.5 48 36 46.8 36 13.5 0.15 0.15 7.5 20 5 32 63 73.5 27.5 53.8 40 52 40 16 8 23 Note 1) Above figure is for D-A73, A80.

MK

Operating range RB Model C 8 8 8 8 D 50 60 50 60 75 85 75 85 85 95 75 85 95 130 100 130 Mounting bolt M3 x 50l M3 x 60l M3 x 50l M3 x 60l M5 x 75l M5 x 85l M5 x 75l M5 x 85l M5 x 85l M5 x 95l M5 x 75l M5 x 85l M6 x 95l M6 x 130l M8 x 100l M8 x 130l MKB12-10 MKB12-20 MKB16-10 MKB16-20 MKB20-10 MKB20-20 MKB25-10 MKB25-20 MKB32-10 MKB32-20 MKB40-10 MKB40-20 MKB50-20 MKB50-50 MKB63-20 MKB63-50

Table of Contents

Operating range RB Model C 8 8 8 8 D 50 60 50 60 75 85 75 85 85 95 75 85 95 130 100 130 Mounting bolt M3 x 50l M3 x 60l M3 x 50l M3 x 60l M5 x 75l M5 x 85l M5 x 75l M5 x 85l M5 x 85l M5 x 95l M5 x 75l M5 x 85l M6 x 95l M6 x 130l M8 x 100l M8 x 130l MKB12-10 MKB12-20 MKB16-10 MKB16-20 MKB20-10 MKB20-20 MKB25-10 MKB25-20 MKB32-10 MKB32-20 MKB40-10 MKB40-20 MKB50-20 MKB50-50 MKB63-20 MKB63-50

The MK-Z series part number equivalent to the old type is “MKB20-10RZ-M9NL.” When only the cylinder is to be replaced, and the current switch will continue to be used, use part numbers “MKB20-10RZ” and “BQ4-012” (auto switch mounting bracket).

This is a legacy product, and replaced byCJ2F16-30RZ, CYL, RND BODY, DBL ACTING, ACTUATOR, CJ2 ROUND BODY CYLINDER, GD, 16MM CJ2 DOUBLE-ACTING, .22046 lb, SeriesDescriptionModelActionNoteVol. no. (for std model)CJ2Air cylinderCJ2Double acting, Single rodExcept with air cushion666

Overall length of the MKB50-30RZ when extended: 172+19+30=221 mm

Rotary Clamp Cylinder: Standard ø12, ø16, ø20, ø25, ø32, ø40, ø50, ø63 Series MK

MK-F020 MK-F025 MK-F032 MK-F040 MK-F050 MK-F063 Bore size (mm) 20 25 32 40 50 63 Head end flange(including mounting bolt) Centering location ring, Set pin, Bolt for cylinder body Calculation: (Example) MKG20-10RFN Standard calculation: MKB20-10R Extra weight calculation: Both ends tapped Head end flange With boss on head end With arm 250 g 6 g 133 g 2 g 100 g 491 g 2

Bore Size: 20mm, Port Thread: M thread: ø12 to ø25, Rc: 32 to 63, Clamp Stroke: 30mm, Rotary Direction: R (Clockwise)

Bore Size: 20mm, Port Thread: M thread: ø12 to ø25, Rc: 32 to 63, Clamp Stroke: 30mm, Rotary Direction: Clockwise, Auto Switch: -

SMC's MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles.  The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series.  Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16

SMC's MK-Z has an allowable moment of inertia 3 times higher than the conventional MK and MK2 styles.  The overall length is the same as the conventional styles, and mounting dimensions are interchangeable with the MK series.  Auto switches can be mounted on any of the 4 surfaces with no projection of the switch.Rotary clamp cylinder w/auto switch mounting grooves, Bore sizes (mm): 12, 16