Rodless cylinders

Aventics rodless pneumatic cylinders are compact linear actuators that eliminate the external piston rod by using an internal carriage system with external coupling through a sealed slot mechanism. These Schlittzylinder designs like the CKP-CL and RTC-HD series provide space-efficient automation solutions for manufacturing equipment, packaging machinery, and material handling systems where installation length must be minimized. The rodless configuration enables stroke lengths up to 1240mm while maintaining compact installation footprints, making them ideal for assembly lines, conveyor systems, and automated positioning applications in automotive, food processing, and electronics manufacturing industries.

Aventics rodless cylinder selection requires matching bore diameter, stroke length, and operating pressure to application force requirements, with available bore sizes including 16mm, 25mm, 32mm, and 63mm across the CKP-CL and RTC-HD series. Stroke lengths range from 520mm to 1240mm in the CKP-CL series, while the RTC-HD heavy-duty variant offers strokes from 900mm to 1000mm for higher load applications. Operating pressure typically ranges from 2 to 10 bar with maximum forces determined by bore area and pressure differential, requiring engineers to calculate required force output against system pressure availability and duty cycle demands for proper cylinder sizing.

Aventics rodless pneumatic cylinders comply with ISO 15552 pneumatic cylinder standards for interchangeability and mounting dimensions, ensuring compatibility with standardized automation components and fixtures. The cylinders meet ISO 8573 compressed air quality requirements and incorporate sealing systems designed for ISO 14243 contamination resistance in industrial environments. Manufacturing follows ISO 9001 quality management standards with pressure vessel compliance to EN 809 where applicable, while electrical components in sensor-equipped variants conform to IEC 60947 switching device standards and achieve IP65 or higher ingress protection ratings for harsh industrial conditions.

The Aventics CKP-CL series represents the standard clean-room compatible rodless cylinder line with bore sizes from 16mm to 32mm and integrated cushioning options, designed for precision positioning in pharmaceutical, electronics, and food processing applications. The RTC-HD heavy-duty series features robust 63mm bore construction with reinforced guide systems and enhanced sealing for demanding industrial environments requiring higher force output and extended service life. Key differences include the CKP-CL series offering more compact installation profiles with stroke lengths up to 1240mm, while RTC-HD cylinders provide superior load capacity and vibration resistance for heavy-duty manufacturing applications with specialized mounting configurations.

Aventics rodless cylinders require rigid mounting to prevent deflection during operation, with standardized ISO 15552 mounting patterns and M5 or G1/8 pneumatic port connections depending on cylinder bore size and series specification. Installation demands precise linear guide alignment and adequate clearance for the external carriage travel, with mounting brackets designed to accommodate thermal expansion and operational loads without binding. The cylinders integrate with standard pneumatic fittings and can accommodate position feedback sensors through T-slot or integrated mounting provisions, requiring compressed air supply filtered to ISO 8573 Class 7.4.4 or better with proper flow control valving for smooth acceleration and deceleration profiles.

Aventics rodless cylinders achieve IP65 ingress protection rating against dust and water jets, with operating temperature ranges from -20°C to +80°C for standard NBR sealing systems and extended ranges to +150°C with specialized high-temperature seal materials. Operating pressure range spans 2 to 10 bar with proof pressure testing to 15 bar minimum, while integrated safety features include controlled exhaust ports and fail-safe positioning capabilities. The cylinders incorporate burst pressure ratings exceeding 30 bar and maintain consistent performance across temperature cycling, with optional position monitoring sensors rated to IP67 for harsh environment applications requiring continuous operation feedback.

Aventics rodless cylinders require preventive maintenance inspection every 2 million cycles or 12 months of continuous operation, whichever occurs first, focusing on seal condition, guide wear, and pneumatic connection integrity. Expected service life ranges from 20 to 50 million cycles depending on operating pressure, duty cycle, and environmental conditions, with seal replacement intervals typically occurring at 10 to 15 million cycles for standard applications. Maintenance procedures include lubrication verification of guide systems, pneumatic leak testing at operating pressure, and carriage alignment checks to ensure continued positioning accuracy within specified tolerances, with complete overhaul recommended after 30 million cycles or upon detection of performance degradation exceeding application requirements.