keytrond
Precision Connectors

Precision Connector

Non-standard connector machined from bar stock, used to join shafts, rods and linkages in automation equipment.

Tolerance
IT8, fit clearance 0.02 - 0.05 mm
Lead time
Sample 4-6 days, batch 8-12 days
General AutomationGlass Machinery
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Technical parameters

Machining parameters for this part

Values below are the standard range keytrond holds for this part family. Tighter requirements are reviewed against the drawing before quotation.

Precision Connector technical parameters
Tolerance rangeIT8, fit clearance 0.02 - 0.05 mm
Surface roughnessRa 1.6
Common materialsSUS303, SUS304, 6061, 45#
Surface treatmentPassivation, Anodizing, Zinc plating
Machining processesCNC Turning, CNC Milling, Surface Finishing
Max machining sizeØ3 - Ø120 mm
Applicable industriesGeneral Automation, Glass Machinery
Minimum order10 pcs for sample, 200 pcs for batch
Lead timeSample 4-6 days, batch 8-12 days
Drawing requirementPlease specify mating shaft and bore tolerance, thread, surface finish and cleaning requirement.
Process notes

How this part is machined

Connectors join one shaft to another, or fix a rod end to a lever, and they are almost always made to drawing. Because the part sits between two finished components, the bore, spigot and thread dimensions have to match the mating parts exactly.

Connectors are turned from bar stock, with milling added when a flat or slot is needed. Threads are rolled or cut to gauge, and every batch sample is checked with go / no-go gauges. After deburring and cleaning, stainless parts are passivated and aluminum parts anodized.

Machining points

Process measures behind the tolerance

  1. 01Bore and spigot in one setupThe bore and locating spigot are machined in the same clamping so the connector sits square on the mating shaft.
  2. 02Deburred and cleanedAll connectors are vibratory deburred and ultrasonically cleaned before packing, so no chip remains in the bore.
Inspection

Inspection items and methods

Inspection itemBore and spigot fit
Method and instrumentPin gauge and micrometer
Inspection itemThread fit
Method and instrumentGo / no-go thread gauge
Inspection itemAppearance
Method and instrumentVisual check under 800 lux

A first article inspection report with dimensional results, material certificate and heat treatment record is provided for sample orders. Batch orders are sampled at 10 percent, with full inspection available on request.

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