SCOTCH YOKE

SCOTCH YOKE
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SCOTCH YOKE

Product catalog summary
Enterprise Profile
Taizhou Juhang Automation Equipment Technology Co., Ltd is dedicated to the research, development, manufacturing, and sales of pneumatic actuators for industrial valves. The company complies with ISO9001:2015 standards and holds certifications such as CE and ATEX.
Product Introduction
The JHD series scotch yoke pneumatic actuator is engineered for 90° rotation valves, providing high output torque, smooth operation, and easy maintenance. It utilizes compressed air to transform linear piston motion into rotary yoke movement.
Product Parameters
- Working Medium: Clean, dry, non-corrosive compressed air
- Air Supply Pressure: 0.35Mpa - 0.7Mpa
- Operating Temperature: Standard (-20℃ to +80℃), Low (-40℃ to +80℃), High (-20℃ to +150℃)
Product Features
- Maintenance-free with corrosion resistance
- High strength design with standardized components
- Modular design for easy assembly and maintenance
- Waterproof protection compliant with IP66 and IP67 standards
Ordering Code
The ordering code specifies series, cylinder size, mode of action, fail position, center body, additional devices, temperature, and pneumatic cylinder quantity.
Main Parts and Materials
Key components include carbon steel for the cover plate and end cap, ductile iron for the yoke, and PTFE for sliding bearings.
Selection of Scotch Yoke Pneumatic Actuators
Guidelines are provided for selecting double and single acting actuators based on required torque and air supply pressure, with detailed torque tables for various models.
Output Torque
Tables provide output torque in N.m for different models at various air supply pressures, highlighting the maximum torque required for valve operation.
Overview: The document offers detailed specifications and performance data for the JHD series pneumatic actuators, focusing on the Scotch Yoke Actuator models. It includes output torque values under various conditions and pressures, in both Newton-meters (N.m) and pound-force inches (lbf.in).
Key Sections:
  • Specifications: Lists multiple models of the JHD series actuators, detailing their output torque at different spring pressures (0.4Mpa, 0.5Mpa, 0.6Mpa) and angles (0°, 45°, 90°) for both fail-closed and fail-open scenarios.
  • Performance Data: Comprehensive torque values for each model are provided, indicating performance under varying conditions, presented in both metric (N.m) and imperial (lbf.in) units.
  • Exceeds Maximum Operating Pressure (MOP): Certain models and conditions are marked as exceeding the maximum operating pressure, indicating limitations in their operational capacity.
Critical Information:
  • Output Torque: Torque values are crucial for understanding the actuator's capability in different operational scenarios, essential for selecting the appropriate actuator model for specific applications.
  • Pressure and Angle Variations: Highlights how torque output varies with changes in spring pressure and actuator angle, providing insights into the actuator's performance flexibility.
  • Limitations: Mention of conditions exceeding MOP is crucial for ensuring safe and effective use of the actuators, preventing potential overpressure situations.
Conclusion: This document serves as a technical reference for engineers and technicians involved in selecting and utilizing pneumatic actuators in various industrial applications. It emphasizes the importance of understanding torque outputs and operational limits to ensure optimal performance and safety.
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Catalog excerpts

SCOTCH YOKE-1

SCOTCH YOKE PNEUMATIC ACTUATOR PROFESSIONAL CAST QUALITY TECHNOLOGY CREATES FUTURE Taizhou Juhang Automation Equipment Technology Co., Ltd Puqing industrial areas, Damaiyu avenue, Yuhuan city, Taizhou City, Zhejiang province, China. Tel:+86-576-87208157 Fax:+86-576-87208537 E-mail:[email protected] Website:www.tzjhkj.com Edition: 2024/08 Doc No.QR/JS-07-03 JHD SERIES SCOTCH YOKE PNEUMATIC ACTUATOR

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SCOTCH YOKE-2

JHD SERIES ROTARY PNEUMATIC ACTUATORS PRODUCT PROFILE 1.Product Introduction JHD series scotch yoke pneumatic actuator has the advantages of high output torque,flexible and smooth action,long service life,and easy maintenance and repair.This series is suitable for 90°rotation valves(such as ball valves,butterfly valves,plug valves)for on/off or metering control,and can be combined with various accessories to achieve automatic control of industrial processes. The principle is that compressed air enters the cylinder and pushes the piston in a linear motion.The piston is converted into a rotary...

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SCOTCH YOKE-3

PRODUCT INSPECTION Each product is rigorously tested and the qualified inspectors are highly responsible for each component, which together, with the most advanced testing equipment and strict scientific management, means that each finished product can stand up to the careful selection of customers. The people of JUHANG solemnly promise to make every product meet the factory standards. This is the secret to the success of our products. 1.Product Introduction JHD series scotch yoke pneumatic actuator has the advantages of high output torque,flexible and smooth life,and easy maintenance and repair.with...

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SCOTCH YOKE-4

SCOTCH YOKE ACTUATOR ORDERING CODE JHD Series Scotch Yoke Pneumatic Actuator Flange Standard: ISO5211 (International Standard) O:Fail Open D:Jack Screw Gear Drive

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SCOTCH YOKE-5

SCOTCH YOKE ACTUATOR PRODUCT FEATURES Maintenance-free Operation Corrosion Resistance The piston rods inside the product have an excellent surface treatment and are equipped with self-lubricating bearing and wear-resistant lubricating bearings attached to the moving parts,so that they can work efficiently for a long time without maintenance. The surface of JHD series pneumatic actuator adopts electrostatic spraying to meet the requirements of petrochemical and chemical industry,etc;the inner surface of the air cylinder is plated with nickel,chrome or PTFE coating,which greatly improves the wear...

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SCOTCH YOKE-6

SCOTCH YOKE ACTUATOR Module Option Spring Module + Jack Screw Pneumatic Module Cylinder Module Spring Module + Jack Screw Gear Drive Hydraulic Module Centre Body Module Hydraulic Module Spring Module + Hydraulic Module Spring Module JUHANG 巨航科技 Spring Module Hydraulic Module

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SCOTCH YOKE-7

SCOTCH YOKE ACTUATOR MAIN PARTS AND MATERIALS JUHANG 巨航科技 Name Cover Plate End Cap Pneumatic Cylinder Guide Ring O-Ring Piston Piston Rod Material Carbon Steel Carbon Steel Carbon Steel PTFE NBR Carbon Steel Carbon Steel Name End Cap Guide Rod Yoke Guide Block Slider Block Spring Rod End Cap Main parts and materials Material Carbon Steel Carbon Steel Ductile Iron Carbon Steel Bronze Carbon Steel Carbon Steel Name Spring Cylinder Spring Spring Seat End Cap Hydraulic Cylinder Adjustment Screw O-Ring Material Carbon Steel Spring Steel Carbon Steel Carbon Steel Carbon Steel Steel NBR Name O-Ring...

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SCOTCH YOKE-8

SCOTCH YOKE ACTUATOR SELECTION OF SCOTCH YOKE PNEUMATIC ACTUATORS As shown below, the valve torque will change as the rotation angle changes at the same time. Although the torque properties of for example ball and butterfly valves are very different, the torque at 0° (open and closed) of both valve designs is usually the maximum torque required to operate. So, if we than can understand the torque changes during the operation of the specific valve, we can match the correct actuator selection in a reasonable and economical way. Selection of double acting actuators Under the condition of normal...

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SCOTCH YOKE-9

SCOTCH YOKE ACTUATOR JHD series pneumatic actuator single action output torque (FC) JHD series pneumatic actuator double acting output torque Output torque in N.m Model Output torque in N.m (Fail Closed) 0.5 Mpa Exceeds MOP: Exceeds Maximum Operating Pressure.

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SCOTCH YOKE-10

SCOTCH YOKE ACTUATOR JHD series pneumatic actuator single action output torque (FO) JHD series pneumatic actuator single action output torque (FC) Output torque in N.m (Fail Closed) Model Output torque in N.m (Fail Open) Model

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SCOTCH YOKE-11

SCOTCH YOKE ACTUATOR TORQUE (lbf.in) TORQUE (N.M) JHD series pneumatic actuator single action output torque (FO) Output torque in N.m (Fail Open) Model JHD series pneumatic actuator double action output torque Output torque in lbf.in Model Exceeds MOP: Exceeds Maximum Operating Pressure.

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SCOTCH YOKE-12

SCOTCH YOKE ACTUATOR TORQUE (lbf.in) JHD series pneumatic actuator single action output torque (FC) JHD series pneumatic actuator single action output torque (FC) Output torque in lbf.in (Fail Closed) Model Output torque in lbf.in (Fail Closed) Model

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SCOTCH YOKE-13

SCOTCH YOKE ACTUATOR TORQUE (lbf-in) JHD series pneumatic actuator single action output torque (FO) JHD series pneumatic actuator single action output torque (FO) Output torque in lbf.in (Fail Open) Model Output torque in lbf.in (Fail Open) Model

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SCOTCH YOKE-14

SCOTCH YOKE ACTUATOR SINGLE ACTING ACTUATOR DIMENSIDNS DOUBLE ACTING ACTUATOR DIMENSIONS Dimensions,mm Model Comments: The standard screw thread for Air connection is “G” thread, “NPT “thread optional. Dimensions,mm Model Comments: The standard screw thread for Air

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SCOTCH YOKE-15

SCOTCH YOKE ACTUATOR SINGLE ACTING ACTUATOR DIMENSIDNS Dimensions,mm Model If you find any errors, please contact us, we will be very grateful for your help, and will correct the errors in time. Comments: The standard screw thread for Air connection is “G” thread, “NPT “thre

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.