Drive System (Motor & Screw) for Machine Bridges and Gantries

Product Specifications

Technical details and manufacturing context for Drive System (Motor & Screw)

Definition

The drive system is a critical component of machine bridges and gantries, responsible for providing controlled linear motion along one or more axes. It typically consists of an electric motor (servo or stepper) coupled to a precision leadscrew or ballscrew mechanism. This system translates the rotational force of the motor into accurate, repeatable linear displacement, enabling the precise positioning of tools, workpieces, or the gantry structure itself in applications such as CNC machining, 3D printing, laser cutting, and automated material handling.

This directory entry covers the combined motor-and-screw assembly as a component for integration into larger machinery. The motor provides the driving torque, while the screw converts rotation into linear travel. The assembly is available in a range of configurations, with the motor rated power typically between 0.75 and 7.5 kW, rated speed between 1500 and 3000 rpm, and supply voltage between 220 and 480 V AC (three-phase, 50/60 Hz). The screw diameter ranges from 16 to 63 mm, with a lead of 5 to 20 mm, and a dynamic load rating of 10 to 50 kN. Positioning accuracy is typically ±0.01 to ±0.05 mm, with repeatability of ±0.005 to ±0.02 mm. Maximum linear speed is 0.5 to 2.0 m/s, and operating temperature ranges from -10 to 60 °C. Protection class is IP54 to IP65, noise level is 60 to 75 dB(A) at 1 m under load, and total weight is 15 to 120 kg.

Materials commonly used for the screw and nut include alloy steel, stainless steel, and aluminum alloy. The assembly is designed to meet relevant standards such as IEC 60034-1 for motors, ISO 3408 for ball screws, and ISO 230-2 for positioning accuracy. However, these standards are reference points for verification; actual compliance must be confirmed with the manufacturer for each specific model.

When selecting a drive system, engineers must consider load torque, speed, screw diameter, lead, and dynamic load rating to ensure adequate stiffness and load capacity. The operating environment, including temperature, dust, and moisture, influences the required protection class. Verification of model-specific values and standards with the legal manufacturer or supplier is essential before procurement.

Working Principle

An electric motor generates rotational torque. This rotation is transmitted (often via a coupling or gearbox) to a threaded screw (leadscrew or ballscrew). A nut, which is fixed to the moving part of the machine (e.g., a carriage or the gantry beam), engages with the screw's threads. As the screw rotates, the nut travels along the screw's axis, converting the rotary motion into linear motion. The motor's speed and position are controlled by a drive amplifier and feedback system (e.g., encoder) to achieve the desired velocity, acceleration, and positional accuracy.

Common Materials

Alloy Steel, Stainless Steel, Aluminum Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Power	0.75–7.5 kW	Select based on load torque and speed.IEC 60034-1
Rated Speed	1500–3000 rpm	Higher speed reduces torque.IEC 60034-1
Supply Voltage	220–480 V AC	Three-phase, 50/60 Hz.IEC 60038
Screw Diameter	16–63 mm	Affects load capacity and stiffness.ISO 3408
Screw Lead	5–20 mm	Determines linear speed per revolution.ISO 3408
Dynamic Load Rating	10–50 kN	For L10 life calculation.ISO 3408
Positioning Accuracy	±0.01–±0.05 mm	Depends on screw grade and feedback.ISO 230-2
Repeatability	±0.005–±0.02 mm	Critical for consistent positioning.ISO 230-2
Maximum Linear Speed	0.5–2.0 m/s	Limited by screw critical speed.
Operating Temperature	-10–60 °C	Outside range may require special lubrication.IEC 60034-1
Protection Class	IP54–IP65	Higher IP for dusty or wet environments.IEC 60529
Noise Level	60–75 dB(A)	At 1 m distance, under load.ISO 3744
Weight	15–120 kg	Includes motor and screw assembly.

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

Servo/Stepper Motor
Provides controlled rotational torque and speed.

Material: Electrical Steel, Copper, Aluminum
Lead Screw / Ball Screw
Precision threaded shaft that converts rotary motion to linear motion.

Material: Alloy Steel (e.g., SCM440), Stainless Steel
Drive Nut Part
Engages with the screw threads and is attached to the moving load.

Material: Bronze, Polymer Composite, Steel
Motor Coupling
Connects the motor shaft to the screw, transmitting torque while compensating for minor misalignment.

Material: Aluminum, Steel, Elastomer
Support Bearings Part
Support the screw axially and radially, minimizing deflection and ensuring smooth rotation.

Material: Bearing Steel (e.g., GCr15)
Drive Amplifier
Controls motor speed and position to the commanded velocity and accuracy.
Encoder
Provides the position feedback that closes the loop on the drive.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Drive System (Motor & Screw).

Applied To / Applications

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

Machine Bridge / Gantry

View system integration details

Manufacturers of Drive System (Motor & Screw)

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Sollant

Shanghai, CN

Also makes: Laser Cutting System, Air Compressor, Rotary Drilling Rig

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the typical rated power range for the motor in this drive system?

According to the directory data, the rated power typically ranges from 0.75 to 7.5 kW, as per IEC 60034-1. However, the exact value depends on the specific model and application requirements, so it must be confirmed with the manufacturer.

How does the screw lead affect linear speed?

The screw lead determines the linear distance traveled per revolution of the screw. A larger lead results in higher linear speed for a given motor speed, but it also reduces the mechanical advantage and may affect positioning accuracy. The typical lead range is 5 to 20 mm, as per ISO 3408.

What is the significance of the dynamic load rating?

The dynamic load rating (C) is used for calculating the L10 life of the screw, which is the theoretical life that 90% of a group of identical screws will reach or exceed under a constant load. The typical range is 10 to 50 kN, as per ISO 3408. It is a key parameter for ensuring the screw can handle the expected loads.

Why is it important to verify the protection class?

The protection class (IP rating) indicates the degree of protection against dust and water ingress. For dusty or wet environments, a higher IP rating (e.g., IP65) is necessary to prevent contamination and ensure reliable operation. The typical range is IP54 to IP65, as per IEC 60529. Always confirm the actual rating for the specific model.

Data Basis

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

Preliminary Technical Classification

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pressure:	N/A (mechanical system, not fluid-based)
other spec:	Max axial load: 5000 N, Max speed: 2 m/s, Positioning accuracy: ±0.01 mm, Repeatability: ±0.005 mm
temperature:	-20°C to +80°C (operating), -40°C to +100°C (storage)

Drive System (Motor & Screw)

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards