Multi-Axis Robotic Arm for Hard Drive Polishing

Product Specifications

Technical details and manufacturing context for Multi-Axis Robotic Arm

Definition

The multi-axis robotic arm is a critical component within the automated computer hard drive platter polishing machine. It is responsible for the precise transfer, orientation, and positioning of hard drive platters between various polishing stations. This component enables an automated workflow by handling delicate platters with micron-level accuracy, ensuring consistent contact with polishing surfaces while minimizing human intervention and contamination risks. The arm is typically constructed from materials such as aluminum alloy, stainless steel, or carbon fiber composite, which provide a balance of strength, rigidity, and weight reduction. It features six degrees of freedom, allowing complex polishing paths and flexible positioning. The maximum payload ranges from 5 to 10 kg, including the end effector and platter, while the reach spans 600 to 1200 mm, determining the cell footprint. Repeatability is specified at ±0.02 to ±0.05 mm, and positioning accuracy at ±0.05 to ±0.1 mm, both per ISO 9283, critical for platter alignment. Maximum speed is 2 to 4 m/s, and power consumption is 1.5 to 3.0 kW. The arm operates on a three-phase supply voltage of 200 to 480 V AC (IEC 60038) and within an operating temperature range of 5 to 40 °C. It has a protection class of IP54 to IP65 (IEC 60529) for dust and splash resistance in cleanroom environments. The arm weighs 150 to 300 kg, with a mounting footprint of 300×300 to 500×500 mm. These parameters are reference ranges; actual values must be confirmed with the legal manufacturer or supplier for specific models and applications. The arm is controlled by a programmable logic controller (PLC) or robotic controller, receiving positional data from the machine's central system. It executes programmed trajectories to pick platters from input trays, position them against polishing heads with specific pressure and angle parameters, and transfer them to subsequent stations or output buffers. This component is essential for achieving high throughput and consistent quality in hard drive manufacturing.

Working Principle

The robotic arm operates through coordinated servo motors at each joint, controlled by a programmable logic controller (PLC) or robotic controller. It receives positional data from the machine's central system, executes programmed trajectories to pick platters from input trays, positions them against polishing heads with specific pressure and angle parameters, and transfers them to subsequent stations or output buffers. The servo motors provide precise motion control, enabling the arm to achieve the required repeatability and accuracy. The controller interprets the program and sends commands to the motors, which move the arm through its six axes. The arm's end effector is designed to handle platters without damage, using vacuum or mechanical grippers. The system operates within defined speed and payload limits to ensure safe and reliable performance. Verification of the arm's performance should include checking repeatability and accuracy against ISO 9283, and confirming that the operating environment meets the specified temperature and protection class requirements.

Common Materials

Aluminum alloy, Stainless steel, Carbon fiber composite

Technical Parameters

Parameter	Typical range	Notes & selection driver
Degrees of Freedom	6	Required for complex polishing paths
Maximum Payload	5–10 kg	Includes end effector and platter
Reach	600–1200 mm	Determines cell footprint
Repeatability	±0.02–±0.05 mm	Critical for platter alignmentISO 9283
Positioning Accuracy	±0.05–±0.1 mm	Ensures consistent polishingISO 9283
Maximum Speed	2–4 m/s	Higher speeds reduce cycle time
Power Consumption	1.5–3.0 kW	Affects energy costs
Supply Voltage	200–480 V AC	Three-phase, 50/60 HzIEC 60038
Operating Temperature	5–40 °C	Outside range may affect servo performance
Protection Class	IP54–IP65	Dust and splash resistance for cleanroomIEC 60529
Weight	150–300 kg	Affects mounting and floor loading
Mounting Footprint	300×300–500×500 mm	Base plate dimensions

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

End effector
Specialized gripper or vacuum cup for securely holding hard drive platters without causing surface damage

Material: Polymer composite
Servo motors
Provide precise rotational movement at each joint with feedback control

Material: Copper windings, steel housing
Reduction gears
Increase torque and improve positioning accuracy of joint movements

Material: Hardened steel
Arm Structure
The jointed segments that give the arm its reach and rigidity.
Robot Controller
Interprets the program and drives the six axes along the planned path.

Applied To / Applications

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

Multi-axis Lasting Station

View system integration details

Manufacturers of Multi-Axis Robotic Arm

Manufacturer profiles associated with Multi-Axis Robotic Arm.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 16 September 2026

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Frequently Asked Questions

What is the typical degrees of freedom for this robotic arm?

The source data indicates 6 degrees of freedom, which is required for complex polishing paths. This allows the arm to orient the platter in multiple axes for precise positioning.

What materials are used in the construction of the arm?

According to the source, the arm may be made of aluminum alloy, stainless steel, or carbon fiber composite. These materials are chosen for their strength, rigidity, and weight properties.

What are the repeatability and accuracy specifications?

Repeatability is ±0.02 to ±0.05 mm, and positioning accuracy is ±0.05 to ±0.1 mm, both per ISO 9283. These are critical for platter alignment and consistent polishing.

What is the operating temperature range?

The arm is specified to operate in temperatures from 5 to 40 °C. Operating outside this range may affect servo performance, so it is important to maintain the environment within these limits.

Data Basis

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

Preliminary Technical Classification

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humidity:	20-80% non-condensing
pressure:	Atmospheric (sealed joints for slurry protection)
temperature:	+5°C to +40°C
vibration tolerance:	< 0.5g RMS at mounting base
slurry concentration:	Up to 30% solids by weight

Multi-Axis Robotic Arm

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards