Drive Shaft / Actuator for Tool Change Arm

Product Specifications

Technical details and manufacturing context for Drive Shaft / Actuator

Definition

The drive shaft/actuator is a critical component of the tool change arm that converts power from the motor into precise linear or rotational movement, enabling the arm to accurately position, grip, and exchange tools in automated machinery such as CNC machines or machining centers. This component is typically manufactured from alloy steel or stainless steel, with material grades such as 42CrMo4 (quenched and tempered) for strength. It is designed to operate within a temperature range of -40 to 85 °C and is available with IP ratings from IP54 to IP65, depending on exposure to coolants and other contaminants. The drive shaft/actuator is characterized by several key parameters that must be verified for the specific application: rated torque ranges from 15 to 60 N·m, operating pressure (if pneumatic or hydraulic) is 1.0 to 1.6 MPa, rotation angle is adjustable from 0 to 180 degrees, position repeatability is ±0.05 mm at the tool interface, supply voltage for integrated sensors is 24 V DC ±10%, shaft diameter is 20 to 50 mm, shaft length is 100 to 300 mm, and weight ranges from 5 to 15 kg. These values are reference ranges and must be confirmed with the legal manufacturer or supplier for the actual model. The component is selected based on arm inertia and required acceleration, and it interfaces with the motor, coupling, and arm bore. For proper integration, verify the shaft diameter and length match the coupling and arm bore, and ensure the operating pressure is sufficient. Adjustable end stops allow setting tool change positions. Maintenance signals include unusual noise, vibration, or leakage, and failure boundaries are exceeded when operating beyond the rated torque, pressure, temperature, or repeatability limits. Always consult the manufacturer's documentation for specific installation, maintenance, and verification procedures.

Working Principle

The drive shaft/actuator typically receives rotational input from a motor or servo. This rotation is either used directly (as a shaft) to drive mechanisms or converted into linear motion (as an actuator via a leadscrew, ball screw, or pneumatic/hydraulic piston) to extend/retract or position the tool change arm. In a shaft configuration, the rotational motion is transmitted directly to the arm mechanism, enabling precise angular positioning. In an actuator configuration, the rotational input is converted into linear displacement, allowing the arm to move along its axis. The conversion mechanism may involve a leadscrew or ball screw for mechanical actuation, or a pneumatic/hydraulic piston for fluid-powered actuation. The choice of configuration depends on the required motion profile, load, and speed. The component must be selected based on the arm's inertia and required acceleration to ensure adequate torque and responsiveness. The operating pressure, if applicable, must be within the specified range to provide sufficient force. The rotation angle is adjustable via end stops to define tool change positions. Position repeatability is critical for accurate tool exchange and is measured at the tool interface. The component is designed to operate within a specified temperature range, and its IP rating indicates its protection against dust and water ingress. Proper integration with the motor, coupling, and arm bore is essential for reliable operation.

Common Materials

Alloy Steel, Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Torque	15–60 N·m	Select based on arm inertia and required acceleration.
Rotation Angle	0–180 °	Adjustable end stops for tool change positions.
Position Repeatability	±0.05 mm	Measured at tool interface; critical for tool change.
Operating Temperature	-40–85 °C	Seals and lubricants rated for this range.
Supply Voltage	24 ±10% V DC	For integrated sensors and control.
IP Rating	IP54–IP65	Higher rating for coolant exposure.IEC 60529
Shaft Diameter	20–50 mm	Match to coupling and arm bore.
Shaft Length	100–300 mm	Depends on arm geometry and stroke.
Material Grade	42CrMo4	Quenched and tempered for strength.DIN EN 10083
Weight	5–15 kg	Affects arm dynamics and motor sizing.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Shaft Body Part
The main structural element that transmits torque and rotation.

Material: Alloy Steel
Coupling or Flange Part
Connects the shaft to the motor or the next component in the drive train.

Material: Steel
Bearing Surfaces Part
Precision-machined areas where bearings are mounted to support and align the shaft.

Material: Hardened Steel
Leadscrew or Piston Optional
The element that turns rotation into stroke on actuator versions — a screw or a fluid piston.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Tool Change Arm

View system integration details

Manufacturers of Drive Shaft / Actuator

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Frequently Asked Questions

What is the function of the drive shaft/actuator in a tool change arm?

It transmits rotational motion and force from the motor to the arm, enabling precise positioning, gripping, and exchange of tools. It can provide direct rotation or convert rotation into linear motion via leadscrew, ball screw, or piston.

What are the key parameters to verify when selecting this component?

Verify rated torque (15–60 N·m), operating pressure (1.0–1.6 MPa if applicable), rotation angle (0–180°), position repeatability (±0.05 mm), operating temperature (-40–85 °C), supply voltage (24 V DC ±10%), IP rating (IP54–IP65), shaft diameter (20–50 mm), shaft length (100–300 mm), material grade (e.g., 42CrMo4), and weight (5–15 kg). Confirm with the manufacturer for your specific model.

How does the drive shaft/actuator achieve linear motion?

It can use a leadscrew or ball screw to convert rotational input into linear displacement, or a pneumatic/hydraulic piston to extend/retract the arm. The choice depends on the required motion profile and load.

What maintenance signals indicate potential issues?

Unusual noise, vibration, or leakage may indicate wear or seal failure. Also, if position repeatability degrades or operating temperature exceeds limits, inspect the component. Always follow manufacturer guidelines.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 150 bar
other spec:	Max rotational speed: 3000 RPM, Torque capacity: 50-500 Nm
temperature:	-20°C to +120°C

Drive Shaft / Actuator

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards