Claw Machine Quality Control Process — Hiclawcrane Factory Standards

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Every Hiclawcrane DIY claw machine kit passes a multi-stage quality control process before shipment. QC checkpoints cover incoming component inspection, individual component testing, assembly verification, full system testing, and pre-shipment final inspection. Kits that fail any checkpoint are pulled from the production line and do not ship.

Why Quality Control Matters for Claw Machine Kits

A claw machine kit contains 16–17 components that must work together as a system. A single defective component — a faulty mainboard, a misaligned gantry rail, or a weak claw spring — can cause the entire machine to malfunction. For operators and distributors buying in bulk, receiving a defective kit means downtime, return shipping costs, and lost revenue.

Hiclawcrane’s QC process is designed to catch defects at the factory, not at the customer’s venue.

QC Stage 1 — Incoming Component Inspection

All components are inspected when they arrive at the factory before entering production:

Component Inspection Points
Gantry rails (steel / stainless steel) Dimensions, straightness, surface finish, no cracks or deformation
Motors (X, Y, Z axis) Winding resistance, shaft runout, no-load rotation, connector integrity
Mainboard Visual solder inspection, voltage rail check, connector pin assignment
Coin acceptor Mechanical operation, signal output verification
Power supply Output voltage accuracy, no-load and load voltage stability
Wiring harness Continuity check, connector crimping, correct pin assignment
Claw assembly Finger alignment, spring tension, pivot movement, motor connector
Speaker Audio output test at rated voltage
LED lights / display board / flash board Power-on function test

Components that fail incoming inspection are rejected and returned to the supplier. They do not enter the production line under any circumstances.

QC Stage 2 — Mainboard Testing

Mainboards undergo a dedicated testing sequence before kit assembly:

  • Power-on test — all voltage rails verified, no short circuits
  • I/O channel test — joystick input, motor outputs, coin acceptor input, display output, audio output all verified
  • Firmware verification — settings menu, claw strength adjustment, payout rate configuration all tested
  • Burn-in test — board runs under continuous load to identify early-failure components

QC Stage 3 — Assembly Verification

During kit assembly, our assembly team follows a standardized checklist for each kit size:

  • Gantry rail alignment — X and Y axis rails checked for parallel alignment and smooth travel
  • Motor mounting — all three axis motors verified for secure mounting and correct orientation
  • Wiring harness routing — all connectors seated, no pinched or strained cables
  • Claw installation — claw assembly mounted, finger alignment re-checked after installation
  • Coin acceptor mounting — verified for correct position and secure fastening
  • PCB feet installation — L-type PCB feet installed to protect mainboard from contact with cabinet base

QC Stage 4 — Full System Test

After assembly, every kit is powered on and tested as a complete system:

  • Joystick control test — all four directions verified for correct gantry response
  • Axis travel test — X, Y, and Z axes travel full range without binding or stalling
  • Coin acceptor test — coin insertion triggers correct credit on mainboard display
  • Claw strength test — grip force verified at factory default setting with test weight
  • Prize sensor test — sensor detection verified on applicable models (25.7cm and 71cm kits)
  • Auto-return test — gantry returns to home position correctly after play cycle
  • Audio test — speaker output verified
  • Lighting test — LED running lights, display board, and flash board all verified

Any kit that fails system testing is pulled from the line. The fault is diagnosed, the defective component is replaced, and the kit is retested from Stage 3 before it can proceed to shipment.

QC Stage 5 — Pre-Shipment Final Inspection

Before packaging, each kit undergoes a final inspection:

  • Component count verified against the kit packing list (16 pcs for 25.7cm kit, 17 pcs for 53cm and 71cm kits)
  • Electronic instruction manual included and correct for kit model
  • All components individually wrapped and protected for shipping
  • Outer carton condition checked — no damage, correct labeling
  • Export documentation prepared: packing list, commercial invoice, certificate of origin

QC Summary by Kit

Kit Components System Test Prize Sensor Test
Mini Kit (25.7cm) 16 pcs ✓ Full system test ✓ Yes
Mid-Size Kit (53cm) 17 pcs ✓ Full system test — N/A
Full-Size Kit (71cm) 17 pcs ✓ Full system test ✓ Yes

Frequently Asked Questions

Q: Do all kits pass the same QC process?
A: Yes. All kit sizes go through the same five-stage QC process. The specific test parameters (e.g., claw strength thresholds, gantry travel distances) are adjusted for each kit size.

Q: What happens if a component fails QC after the kit is assembled?
A: The kit is pulled from the production line. The defective component is replaced, and the kit is retested from the assembly verification stage. We do not patch or bypass failed components.

Q: Can I request QC documentation for my order?
A: Yes. QC documentation is available for bulk and OEM orders. Contact us before placing your order to discuss documentation requirements.

Q: Do you offer a warranty on the kits?
A: Yes. Contact us for current warranty terms applicable to your order type and destination market.

Related Pages — Factory Authority Series