Medium O-Ring Inspection Machine (100-400 mm)

What This Machine Does

For O-rings from 100 to 400 mm, the medium-ring tensile machine simulates real working conditions with a straightforward manual design focused on targeted defects. The ring is stretched the way it would be in service while cameras inspect the surface, which brings out defect types that a relaxed, flat view can miss. This is the model covered by the medium ring inspection machine product page (/products/tensile-medium-ring-inspection-machine).

Key Specifications at a Glance

• Machine size: 950 x 1120 x 1776 mm.

• Inspection targets: Medium O-rings (rectangular and special-shaped rings - confirm with the factory at quotation).

• Size range: 100-400 mm.

• Camera configuration: 4 appearance cameras (optional: 1 wire-diameter uniformity camera).

• Dimensional checks: Wire diameter uniformity.

• Visual checks: Missing material, scratches, burrs, cracks, vulcanized adhesive.

• Feeding: Manual loading (customizable robot automatic feeding).

• Repeatability: +/- 0.02 mm.

• Efficiency: 4-6 pcs/min with automatic feeding (standard loading is manual, so throughput depends on the operator; speed also varies with circumference and shot count).

All specifications above come from the Shengyi New Material (Huzhou) Co., Ltd. machine brochure and are confirmed per configuration at quotation.

Medium vs Ultra-Large: Choose by Ring Size

The two ring machines split by diameter: this one covers 100-400 mm, the ultra-large ring inspection machine (/posts/large-o-ring-inspection-machine) covers 300-1000 mm - its product page (/products/tensile-ultra-large-ring-inspection-machine) lists the full configuration. Between 300 and 400 mm the ranges overlap - in that window either machine may fit, and the factory confirms which one matches your ring family best. Below 100 mm, standard turntable machines like the HZXX-JC01 single-table model (/posts/hzxx-jc01-single-table-inspection-machine) are the right platform.

Why Working-Condition Stretching Matters

A ring that looks clean while relaxed can reveal cracks, scratches or material problems once stretched to its working state. The tensile approach on this machine is built around that: inspect the ring under simulated working conditions so the defect list you approve reflects what your customer actually receives in service.

Typical Defects It Is Built Around

From the brochure's defect list, the visual checks cover missing material, scratches, burrs, cracks and vulcanized adhesive, with wire-diameter uniformity available through the optional camera. If you are still formalizing which defects matter for your product, start with how to define OK/NG defect criteria (/posts/defining-defects-ai-visual-inspection).

Manual vs Robot Loading: How to Decide

Manual loading is the standard configuration - an operator places each ring on the fixture. Robot automatic feeding is a customization. If an operator already handles each ring before packing, manual loading adds little friction and keeps the machine simple; if you run unattended batches, discuss robotic feeding at quotation so gripper and fixture are designed together.

Throughput and Repeatability

The brochure lists 4-6 pieces per minute with automatic feeding, with speed varying by circumference and shot count, and repeatability of +/- 0.02 mm. Larger rings near the 400 mm limit take longer per rotation than small ones, which is why throughput is confirmed against your actual ring family rather than quoted as a single number.

What Drives the Quote

The quote moves with camera configuration, the optional wire-diameter camera, and whether you add robot feeding. A standard manual machine with four appearance cameras is the baseline; every addition after that is scoped in the quotation. For the factors that decide inspection machine pricing across the range, see vision inspection machine cost: 7 price factors (/posts/vision-inspection-machine-cost-7-price-factors).

When Not to Choose This Machine

Not for rings outside 100-400 mm. For rings above 400 mm (up to 1000 mm) the ultra-large machine is the fit; in the 300-400 mm overlap either machine may fit and the factory confirms; below 100 mm, standard turntable machines apply. Rings at the edges of the range should be sent as samples so the fixture coverage can be verified before quotation.

Frequently Asked Questions

Is it fully automatic? Loading is manual as standard; robot automatic feeding can be custom-designed.

Which defects does it target? Missing material, scratches, burrs, cracks and vulcanized adhesive, with wire-diameter uniformity as an option.

What repeatability does it offer? +/- 0.02 mm per the brochure, confirmed per configuration at quotation.

How fast does it run? 4-6 pieces per minute with automatic feeding; actual speed varies with circumference and shot count.

What to Prepare Before You Ask for a Quote

Prepare: ring drawings with tolerances, the defect types you must catch, your throughput target, and samples of good, bad and borderline rings. These decide the camera count, the fixture and the final cycle-time confirmation.

Next Step

Send your medium-ring samples and defect list. We validate the fixture and camera positions on your parts and quote the machine with or without robot feeding. Contact the team (/contact-us) - Monica (+86 138 5726 5705) or Arya (+86 173 2430 9735), or email info@aivisioncheck.com.