AVENTICS cylinder R414007421 in stock

Brand

AVENTICS/Germany

Action Method

Other

Application Areas

Petroleum, Mining, Energy, Electrical, General

AVENTICS Solenoid Valves, AVENTICS Pneumatic Components, AVENTICS, AVENTICS Offices

AVENTICS Rotary Cylinder Models, AVENTICS Rotary Cylinders

Common AVENTICS Cylinder Faults

Problem

AVENTICS cylinders are cast. After leaving the factory, they undergo aging treatment to eliminate the internal stress generated during the casting process. If the aging time is too short, the finished cylinder will deform during subsequent operation.

The cylinder is subjected to complex forces during operation. In addition to static loads such as the pressure difference between the inside and outside of the cylinder and the weight of the various components inside, it must also withstand the reaction force of steam flowing out of the stationary vanes on the stationary parts, as well as the forces exerted on the cylinder by various connecting pipes under hot and cold conditions. Under the interaction of these forces, the cylinder is prone to plastic deformation, resulting in leakage.

Rapid load increases or decreases in the cylinder, especially during rapid starts, stops, and changes in operating conditions, can cause significant temperature fluctuations. Incorrect cylinder warm-up methods and premature removal of insulation during shutdown maintenance can also lead to substantial thermal stress and deformation in the cylinder and flanges.

AVENTICS cylinders may experience stress during machining or after welding repairs, but this stress may not be eliminated through tempering, resulting in significant residual stress and deformation during operation.

During installation or maintenance, improper maintenance processes and techniques can cause inappropriate expansion clearances in the inner cylinder, cylinder diaphragms, diaphragm sleeves, and steam seal sleeves, or inappropriate expansion clearances in the lug pressure plates. This can generate significant expansion forces during operation, causing cylinder deformation.

Poor quality, excessive impurities, or incorrect type of cylinder sealant can also cause problems. Hard impurities in the sealant can prevent a tight seal.

Insufficient tightening of AVENTICS cylinder bolts or use of substandard bolt material can also contribute to the issue. The tightness of the cylinder mating surfaces depends primarily on the bolt tightening force. The thermal stress and high temperatures generated during unit start-up, shutdown, or load adjustments can cause bolt stress relaxation. If the stress is insufficient, the bolt preload will gradually decrease. If the cylinder bolts are of poor quality, they will elongate under thermal stress and cylinder expansion forces during prolonged operation, leading to plastic deformation or fracture. This results in insufficient tightening force and cylinder leakage.

The tightening sequence of AVENTICS cylinder bolts is incorrect. Generally, cylinder bolts are tightened simultaneously from the center outwards, starting from the point of maximum sag or deformation. This shifts the clearance from the point of greatest deformation towards the free ends of the cylinder, eventually eliminating the clearance. If tightened from the sides towards the center, the clearance concentrates in the middle, forming an arc-shaped gap at the cylinder mating surface, causing steam leakage.

Several operating modes suitable for different applications, easy to operate and maintain.

Removable fan with LCD control panel (with copy function)

*The source filter for functions and high performance settings is set and started using PC software.

Continuous rated current 1) [A 1,3 2,5 4 5,5 10 13]

Motor rated voltage Phase 0 V ... Main power supply voltage

German AVENTICS rotary cylinder model, AVENTICS rotary cylinder

■Mounting surface according to DIN 24340 Type A and ISO 4401

■RV-P pilot control valve closed-loop position control pilot control valve and main stage

■Control the direction and magnitude of flow

■For power, position, speed and closed-loop control

■Suitable for closed-loop control of power, position, speed and pressure

Motor rated voltage Three-phase, 0 V ... Main power supply voltage

■Pilot control via 3-way high-frequency response valve with position feedback

Output voltage 0 Power supply output frequency 0 ... 400 Hz

Power supply voltage 3AC 3 AC 380 … 480 V (-15% / +10%)

Frequency 50... 60 Hz (±5%) Overload capacity s 200% In or 60 s 150% In

Rexroth/AVENTICS Rotary Cylinders

Ambient Temperature Minimum/Maximum +5°C / +60°C

Lowest/Highest Medium Temperature +5°C / +60°C

Medium Compressed Air

Particle Size max. 5 μm

Oil Content in Compressed Air 0 mg/m3 - 1 mg/m3

Theoretical Torque 6 bar

Materials:

Shell Aluminum, Anodized

Cover Plate Aluminum, Anodized, Blackened

Base Plate Aluminum, Anodized, Blackened

Sealing Acrylic Resin

Shaft Steel, Quenched

Rotating Flange Steel, Quenched The pressure dew point must be at least 15°C below the ambient and medium temperatures, and the maximum permissible temperature is... 3 °C.

■ The oil content of the compressed air must remain constant throughout its service life.

■ Only use oils approved by Bosch Rexroth; see the "Technical Information" section.

■ This product is a component of the EasyHandling system.

Rexroth/AVENTICS Rotary Cylinders

Maximum Permissible Axial Bearing Load [N] 170 280 330 490 620

Maximum Permissible Radial Bearing Load [N] 170 300 360 580 780

Maximum Permissible Moment of Inertia [kgcm²] 0.08 0.25 0.7 1.6 3.2

Repeatability [°] 0.2 0.2 0.2 0.2 0.2

Theoretical Torque [Nm] 0.17 0.33 0.95 1.7 3

Size RCM-25

Maximum Permissible Axial Bearing Load [N] 1160

Maximum Permissible Radial Bearing Load [N] 1480

Maximum Permissible Moment of Inertia [kgcm²] 6.3

Repeatability [°] 0.2

Theoretical Torque [Nm] 6,5

0822391607 0822392000 0822393000 0822394000 0822395000 0822395003 0822396000 0822397000 0822398004 0822406001 0822406900 0822411200 0822421101 0822422101 0822423101 0822424101 0822425101 0822424101 0822430201 0822431201 0822432201 0822434201 0822491001 0822492000 0822493000 0822494000 0822495000 0822495001 0822497000 0822930201 0822931204 0822932204 0822933204 0822934204 0822934201 0822955001 0822955005 0822957001 0822958001 0822959001 0830100300 0830100371 1820148009 1820209000 1820210041 1820220013 1820222013 1820311011 1820363007 1820415010 1820415106 1820455012 1820455056

Rexroth/AVENTICS Rotary Cylinders

The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, Vickers, Helón (Norgren)

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi