MY1C Series Rodless Cylinder Series MY1C

What is a Rodless Cylinder? Sizing and Moments Features and Benefits Agenda What is a Rodless Cylinder? Sizing and Moments Features and Benefits Maintenance Series MY1C

What is a Rodless Cylinder? Pneumatic rodless cylinders, including the mechanical joint type MY1C Series, were developed to provide linear motion with minimum space requirements. They are a low cost alternative to the much higher priced electrically driven linear slides commonly referred to as “servos”. Series MY1C

What is a Rodless Cylinder? Space savings - 1/2 the overall length of a conventional cylinder Rodless Cylinder Conventional Cylinder 5’ stroke 5’ stroke Additional 5’ Series MY1C

What is a Rodless Cylinder? An internal piston drives the slider block which is coupled by a “floating” mechanical joint. Slider Block Mechanical Joint Piston Series MY1C

What is a Rodless Cylinder? Guides are incorporated for load carrying capability The MY1C series uses a Cam Follower Guide for High Loads and a Table Accuracy of +/- 0.05mm The MY1C is not just a cylinder. It is an engineered product Series MY1C

Sizing and Moments YAW ROLL PITCH SMC Training There are 3 main axes of movement, PITCH, YAW, and ROLL. In determining the forces on an actuator, proper selection requires an understanding and calculation of these forces --- referred to as specific moments, or: M1 PITCH M2 YAW M3 ROLL SMC Training

Sizing and Moments M1 PITCH M3 YAW M2 ROLL SMC Training Rodless Cylinders are selected when extreme precision is required --- holding tolerance throughout full stroke--- in spite of moments that would deflect normal cylinders. These moments are categorized as M1, M2, and M3; illustrating forces that are part of the process. M1 PITCH W Side view M3 YAW M2 ROLL W Top view W End view SMC Training

Sizing and Moments M1 PITCH M2 ROLL M3 YAW SMC Training Side view Sometimes the moment is eccentric (off centerline) and this poses additional calculations and concerns. Consult the catalog for assistance in determining what moments are acceptable for each bore within an MY series…. you must know the application. M2 ROLL M3 YAW W Top view W End view SMC Training

MY1C Series Feature and Benefits 7 Bores sizes - 16 ~ 63mm bore Stroke ranges from 100 ~ 5000mm Repairable Precise Cam Follower Guide system Centralized piping Stroke adjusting units with hard stops or shock absorbers Autoswitch capable Adjustable air cushions “Floating joint” mechanical connection between the piston and slide table Side Supports Debris Cover The MY1C is one in a family of seven different mechanically coupled rodless cylinders: MY1B- Basic MY1M- Slide Bearing MY1C- Cam Follower Guide MY1H- High Precision Guide MY2H- L.P. High Precision Guide MY2HT- L.P. Dual High Precision Guide MY1TH- Heavy Duty Series MY1C

Construction Series MY1C

Preventive Maintenance Filtration - Always 5 micron or better, no oil or lubricant Grease - Apply grease (Lithium Soap Based - See Text) monthly to all bearing contact surfaces and to the dust seal band Tightening or Replacement of the Dust Seal Band - The Dust Seal can stretch over time, and needs to be tightened or replaced. (Note standard and wide bands) Leakage- Leakage is inherent to mechanically coupled rodless cylinders due to their design. A small amount of air leakage (300 Ncc/min or 0.3 l/min) is expected. Series MY1C

Repair Kits Series MY1C Dust Seal Band Part Number: MY1M32-PSS2.5, Std. Width, 2.5m MY1M32-PSS5.5, Std. Width, 5.5m MY1M32-PSW2.5, Wide width, 2.5m MY1M32-PSW5.5, Wide width, 5.5m *Includes grease and and set screws Note: The dust seal band can be ordered in two different widths, a standard, and a wide band. The grooves in the cylinder tube extrusions vary, and must be measured before assembly. To identify band width check the set screws that hold the band in place. If they are black, then use the standard band. If they are silver, then use the wide band. If this dimension is larger than 15.2mm, then use the wide band, Series MY1C

Repair Kits Series MY1C Seal Belt Part Number: MY1M32-PSB2.5, 2.5m *Includes grease and belt clamps Series MY1C

Repair Kits Series MY1C Seal Kit Part Number: MY1M32-PSQ *Includes tube gaskets, piston seals, cushion seals grease and belt clamps. Table End Cover Kit Part Number: MY1M32-PSC *Includes scrapers, grease, end covers stoppers, spacers, and screws. Series MY1C

Dust Seal Band Maintenance Tightening the Dust Seal Band Disassembly Loosen the two set screws on one of the head covers. This will allow one end of the dust seal band to “float” Adjustment Cycle the cylinder’s slide table by hand three or four times, and return the table to the end were the dust seal band is not fixed. During the last stroke slide your thumb across the dust seal band to remove any slack. Series MY1C

Dust Seal Band Maintenance Tightening the Dust Seal Band - con’t Assembly Tighten the two remaining set screws to fix the dust seal band. Cycle the cylinder’s table by hand to see if there is any slack. If slack is present the band needs to be replaced. If the band is ok, then uniformly apply Lithium Soap based grease to the band. Cycle, and remove any excess grease. Series MY1C

Seal Band Maintenance Series MY1C Replacing the Dust Seal Band, and the Seal Belt Disassembly Loosen the four set screws on both of the head covers. Remove the belt clamps Remove both head covers Remove the two slide table end covers Slowly pull out the dust seal band Slide the table and piston assy. to one end of the cylinder. Do not remove the table and piston, or it will need to be adjusted. Pull out the seal belt Assembly Tighten the two remaining set screws to fix the dust seal band. Cycle the cylinder’s table by hand to see if there is any slack. If slack is present the band needs to be replaced. If the band is ok, then uniformly apply Lithium Soap based grease to the band. Cycle, and remove any excess grease. Series MY1C

Seal Band Maintenance Series MY1C Replacing the Dust Seal Band, and the Seal Belt Installing the Seal Belt Cut the new seal belt to the combined length of the cylinder + end caps + piston assy. (Remember, longer is better!) Apply a layer of grease to the seal belt and fill it’s groove Slide the seal belt into the cylinder tube extrusion through the belt guide on the piston. Also, the extra belt length should project equally from both sides. Move the slide table and piston to the opposite end of the cylinder tube. This should seat the seal belt into the tube extrusions groove. Remove excess grease. Belt Guide Series MY1C

Seal Band Maintenance Series MY1C Replacing the Dust Seal Band, and the Seal Belt Installing the Dust Seal Belt Cut the new seal belt to the combined length of the cylinder + end caps + piston assy. Insert the new dust seal band (metallic side up) over the seal belt, and between the piston and table assy. Insert the dust seal band in the recess in the tube with light finger pressure across the entire length of the cylinder tube. Cycle the cylinder’s slide table by hand three or four times, and return the table to the end were the dust seal band is not fixed. During the last stroke slide your thumb across the dust seal band to remove any slack. Cut the excess dust seal band leaving 10~15mm passed the two set screws in the end cover Uniformly apply Lithium Soap based grease to the band. Series MY1C

Seal Band Maintenance Series MY1C Hint: Trim the rubber backing Replacing the Dust Seal Band, and the Seal Belt Hint: Trim the rubber backing 10 ~ 15mm so the band will fit underneath the set screws Caution!: Just trim one side to begin with! Series MY1C

Seal Band Maintenance Series MY1C Replacing the Dust Seal Band, and the Seal Belt Install the side table’s end cover(s) so there is a 1mm clearance between the cover(s) and the dust seal belt Series MY1C

Seal Band Maintenance Series MY1C Replacing the Dust Seal Band, and the Seal Belt Insert the seal belt and dust seal band into the head cover in corresponding locations Install the head covers into the tube extrusion with a slight rocking motion. Thread the socket head cap screws into the head cover by hand. Do not tighten yet. Place the cylinder on a flat plate and align the head covers. tighten the socket head cap screws. Trim any excess seal belt and dust seal band. Place the belt clamp into the slot in the head cover. Tighten the four set screws on one side of the cylinder. Cycle the cylinder’s slide table by hand 3 or 4 times, and return the table to the end were the dust seal band is not fixed. During the last stroke slide your thumb across the dust seal band to remove any slack. Install the belt clamp, and tighten the 4 set screws on the other side of the cylinder. Series MY1C

Seal Replacement Series MY1C Important! When replacing the piston and cushions seals do not remove the piston from the cylinder tube. Also do not move the table past the cam follower rails. Failure to follow these direction will result in the table needing to be readjusted. To replace the tube seal, remove the end cap and insert a new seal. Reassemble following the same instructions for dust seal replacement. Seal goes here Seals go here To replace the piston and cushion seals, remove both end caps, and side the piston to each end of the cylinder. This will allow access to the seals without removing the piston and table from the cylinder. Reassemble following the same instructions for dust seal replacement. Series MY1C

Slide Table Adjustment Adjusting the slide table is a “non-standard” procedure, and should not need to be done. However, information is available in the MY1C Operations Manual to perform this adjustment. CAMS Adjusting Gear (Slotted) Set Screw (Hex Head) Series MY1C

Series MY1C