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Turbo-chargers are key components in automotive, aerospace and defense applications. A typical unit is built from a rotor, compressor, sealing set, center housing and bearing system. Assembly tolerances are extremely tight, so manufacturers must use state-of-the-art fabrication and fastening technology and follow strict standards. Below is how Danikor’s screw-feeding and tightening solutions are applied in this sector.

Fastener characteristics in turbo-chargers
Screws are usually short, small, with large head diameters and external-hex or Torx drives.
Example: L / D = 1.05. When the length-to-diameter ratio is < 1.3 the contact angle can drop below 30°, creating a jam risk inside the blow tube.

Danikor solutions

1. Side-mounted “blow-and-suck” module – the step feeder delivers the screw to a pick-up station where it is immediately vacuum-picked and driven.

2. External-hex swivel-nose “blow-and-suck” – the screw travels along a rail to the nose piece and is then transferred to the tightening station.

Step feeder covers M2 – M24 screws

• Jam rate < 0.02 %

• Low noise – special structure reduces impact sound

• Clean feeding – no vibratory bowl, minimal debris, optional dust-removal module

• Poka-yoke –scan-code lid opening, length checking, etc.

Tightening difficulty scale
Planar < single-side interference ≤ multi-side interference ≤ counter-bore interference
Corresponding feeding strategy:
Blow → Blow / Blow-suck → Suck / Blow-suck → Blow-suck

A. Planar joint – standard blow module

• No surrounding obstacles

• Simple & light-weight

B. Interference present – blow-suck module

• Obstacles around the boss

• Compact spaces

• Rugged nose piece

• No friction between clamp jaws and suction tube → long tube life

C. Small LDR screws – side-mounted blow-suck

• Screws with LDR < 1.3

• Narrow clearances

• Obstacles nearby

D. Large LDR screws – swivel-nose blow module

• No surrounding obstacles

• Suitable for long screws

E. Weight-sensitive systems – integrated tightening module

• Low moving mass for robot or cobot

• Tight spaces

• Human-robot collaboration

These Danikor packages increase accuracy, speed and stability in turbo-charger assembly, giving manufacturers a strong foundation for high-quality, high-volume production.