Spring Balancer | Precision Assembly Machines and Tools Manufacturer

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Chengmao Spring Balancer Service Introduction

Chengmao Tools Industrial Co., Ltd. is Taiwan Spring Balancer supplier and manufacturer with more than 46 years experence. Since 1977, in the Hand Tools Industry, Chengmao has been offering our customers high quality Spring Balancer production service. With both advanced technology and 46 years experience, Chengmao always make sure to meet each customer's demand.

Chengmao welcome you to view our high quality products and feel free to Contact Us.

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EV Charge Cable Balancer, 4~6kg

ECB-6R

Seals ECB-6R EV Charge Cable Balancerr, Load range 4~6kg, Be applicable charging pile cable hanging tool.
EV Charge Cable Balancer, 7~16kg

ECB-16R

Seals ECB-16R EV Charge Cable Balancer, Load range 7~16kg, Be applicable charging pile cable hanging tool.
Hose Balancer (0.5 - 1.5kg) Spiral Type in Zero Gravity

TAB-1.5

SEALS Air Hose Balancer, TAB-1.5 (0.5kg~1.5kg), are designed for small pneumatic tools. By integrating PU braided air hose and spring driven flexible tension keep work area clean and neat. SEALS Air Tool Balancers is easy to reach the tools and quick position the tool in the right place when you don't use it anymore. For different weight of air tools, it is easy to adjust tension by using handle Hex key.
Hose Balancer (1.5 - 3.0kg) Spiral Type in Zero Gravity

TAB-3

SEALS Air Hose Balancer, TAB-3 (1.5kg~3.0kg), are designed for small pneumatic tools. By integrating PU braided air hose and spring driven flexible tension keep work area clean and neat. SEALS Air Tool Balancers is easy to reach the tools and quick position the tool in the right place when you don't use it anymore. For different weight of air tools, it is easy to adjust tension by using handle Hex key.
Hose Balancer (3.0 - 5.0kg) Spiral Type in Zero Gravity

TAB-5

SEALS Air Hose Balancer, TAB-5 (3.0kg~5.0kg), are designed for small pneumatic tools. By integrating PU braided air hose and spring driven flexible tension keep work area clean and neat. SEALS Air Tool Balancers is easy to reach the tools and quick position the tool in the right place when you don't use it anymore. For different weight of air tools, it is easy to adjust tension by using handle Hex key.
Automatic Screw Feeder with Lever-Activating screwdriver set

CM-30T

SEALS CM-30T Automatic Screw Feeder adopt ergonomic design of screwdriver set. The operator only need to simply trigger the lever of driver and the bit will push downward and fasten screw automatically. SEALS CM-30T reduces the downward press stroke of operator to enhance the productivity and reduce fatige . Meanwhile, the jaw will not press the surface of work-piece hardly so that it could also protect the coating of products. For automation purpose, SEALS automatic screw feeder also could be integrated into automation machine such as XY Table, SCARA robot, 6 axis ROBOT and any customized auto assembly machine, etc. And, its automation version also can provide relevant signals and receive control signal for communicate with major control system.
Automatic Screw Feeder with servo nut runner

CM-30T-SERVO

The SEALS CM-30T-SERVO adopts a high-precision, low-reaction-force servo nut runner that delivers detailed fastening data for every screw, ensuring speed, stability, and process transparency. When fastening parameters deviate from preset values, the system provides real-time alerts and generates a complete, traceable report to support quality control and auditing. This system supports multi-step fastening actions programmed into a single job—ideal for complex tasks that conventional electric screwdrivers cannot perform. Additionally, it allows precise control of rotation angle and speed to meet specific tightening requirements. The screw jaw is custom-built based on the screw type and working environment, ensuring reliable positioning and stable operation. The lever-activated design meets ergonomic and labor-saving standards; the screwdriver automatically initiates fastening with a single press of the lever. When paired with the TA-300 torque reaction arm, the tool maintains a stable vertical alignment, improves torque accuracy, and reduces operator fatigue. This setup is especially effective for high-torque shut-off applications where consistent torque control is essential.
Automatic Screw Feeder with telescope screwdriver set

CM-40

The SEALS CM-40 Automatic Screw Feeder is designed for speed, stability, and convenience. It integrates high-precision jaws, a reliable automatic feeding system, and Japanese-made torque-controlled pneumatic or electric screwdrivers to significantly enhance screw fastening speed and production efficiency. The screw jaws are custom-designed based on the customer's screw type and working environment, ensuring smooth and stable operation. SEALS also provides screwdriver model recommendations tailored to your specific screw and workpiece characteristics to ensure optimal fastening results. The material hopper adopts an up-and-down pushing board design to minimize screw surface scratches and keep feeding noise to a minimum. Combined with a fiber optic control system, the feeder intelligently stops when the chute is full, saving power and further reducing noise. The air blow feeding mechanism enables the next screw to be delivered to the jaw within 0.5 seconds—often before the operator moves to the next fastening point—greatly improving cycle time. A horizontal vibration chute is available to improve feeding performance for lightweight screws, painted screws, or screws with washers. The telescope-type screwdriver delivers consistent downward force directly into the sleeve of the screw, making it particularly suitable for self-tapping screws and wood screws. For automation integration, the screw feeder can be triggered via a dry contact to blow one screw per cycle. The screwdriver can also be mounted on a cylinder to enable vertical fastening strokes in fully automated assembly systems.
Automatic Screw Feeder with Lever-Activating Design

CM-40T

The SEALS CM-40T Automatic Screw Feeder is designed based on the principles of speed, stability, and convenience. It integrates pneumatic or electric torque-controlled screwdrivers, precision-engineered jaws, and a reliable horizontal feeding mechanism to significantly improve fastening speed and overall production efficiency. The system features an ergonomic lever-activated design that allows the operator to simply press the lever, prompting the screwdriver bit to automatically push downward and complete the fastening process. This design minimizes the required press stroke, reduces operator fatigue, and enhances productivity. The jaw is engineered to avoid direct pressure on the surface of the workpiece, effectively protecting product finishes and coatings from damage. To meet the demands of automated manufacturing, the CM-40T can also be integrated into various automation platforms such as XY tables, SCARA robots, 6-axis robotic arms, or other custom automatic assembly systems. The automation-ready version supports input/output signal communication and can seamlessly interface with major control systems.
Automatic Rivet Feeder

CR-501

Automated Rivet Feeding Module Integrated with Handheld Rivet Gun – Engineered for Precision and Productivity
Torque Linear Arm ( 182-561mm working radius)

TA-300S

Seals Torque Reaction Arm is designed to avoid repetitive work and excessive use of arm injuries in daily work. We provide Torque Reaction Arm to improve the ergonomic manufacturing process to eliminate instant torque and weight loads After clamping the screwdriver, the Torque Reaction Arm can be operated back and forth, left and right, up and down, and can rotate freely at 360°. It can always support the screwdriver. The maximum working diameter is 1122mm. Various screw locking operations can be carried out within the range to reduce work The failure rate ensures that the screwdriver locks the screws at a vertical angle, improves the quality of screw locking, and reduces product quality problems such as operator errors and defective locking screws. This Torque Reaction Arm can effectively reduce the space requirement of the workplace. With the help of the spring lifting force of the Spring Balancer, the suspended arm frame is in a weightless state, which reduces the labor status of personnel, improves labor production efficiency, and creates a safe and efficient working environment. It can be directly fixed on the work surface (recommended) and a C-shaped table clamp is provided, two installation methods.
Torque Linear Arm ( 236-744mm working radius)

TA-600S

Seals Torque Reaction Arm is designed to avoid repetitive work and excessive use of arm injuries in daily work. We provide Torque Reaction Arm to improve the ergonomic manufacturing process to eliminate instant torque and weight loads After clamping the screwdriver, the Torque Reaction Arm can be operated back and forth, left and right, up and down, and can rotate freely at 360°. It can always support the screwdriver. The maximum working diameter is 1488mm. Various screw locking operations can be carried out within the range to reduce work The failure rate ensures that the screwdriver locks the screws at a vertical angle, improves the quality of screw locking, and reduces product quality problems such as operator errors and defective locking screws. This Torque Reaction Arm can effectively reduce the space requirement of the workplace. With the help of the spring lifting force of the Spring Balancer, the suspended arm frame is in a weightless state, which reduces the labor status of personnel, improves labor production efficiency, and creates a safe and efficient working environment. It can be directly fixed on the work surface (recommended) and a C-shaped table clamp is provided, two installation methods.
Wall-mounted Torque Reaction Arm(Spring Balancer Type)

HTR-20

Seals HTR series mounts on aluminum extrusions or walls, no longer limited to countertops. Seals Torque Reaction Arm, It is based on the design principle of avoiding repetitive work and overuse of the arm in daily work. Eliminates torsional torque and weight loads, creating a safe working environment.
Wall-mounted Torque Reaction Arm(Spring Balancer Type)

HTR-25

Seals HTR series mounts on aluminum extrusions or walls, no longer limited to countertops. Seals Torque Reaction Arm, It is based on the design principle of avoiding repetitive work and overuse of the arm in daily work. Eliminates torsional torque and weight loads, creating a safe working environment.
Wall-mounted Torque Reaction Arm(Tool Balancer Type)

PHTR-20

PHTR-20 is a wall-mounted torque reaction arm system designed for workstations where desktop installation is not feasible. It is paired with the TR-350 articulated torque reaction arm (hanger, shaft, and base not included). Configured with a Tool Balancer, the system maintains the stability of the wall-mounted support structure and torque transmission mechanism while providing a more cost-effective configuration option.