Hollow-shaft slip ring DHK310

through-holefor cable reelsindustrial

Short Description

• DHK310 series large inner-hole hollow-shaft conductive slip rings.
• Standard one-piece precision slip ring with a 310 mm through-hole (suitable for shafts ≤ 310 mm; sleeve adapter available for smaller bores).
• Custom-made to order; supports mixed power and signal circuits.
• Gold-plated rings and alloy brushes available; multiple current and voltage options.

Product Detail
The DHK310-78 series hollow-shaft slip rings are designed for rotating electromechanical systems requiring a 310 mm inner bore. They provide continuous 360° transmission of power and signals for automated industrial control systems, rotary transfer systems and intelligent loading robots.

Typical power ring rating is 20 A per ring (up to 48 rings) and typical signal ring rating is 5 A per ring (up to 96 rings). Housing materials referenced include aluminum alloy; some hollow-shaft variants use stainless steel. The unit supports customized configurations of circuit counts, current ratings and connector options per order.

Typical Applications

• Automatic machinery
• Cable reels and rewinders
• Robots and rotation sensors
• Display and imaging equipment
• Packaging machinery
• Industrial turntables
• Medical and pharmaceutical devices
• Marking and filling machines
• CNC machine tools

Product Naming Description
(1) Product type: DH — electric slip ring.
(2) Installation method: K — through hole.
(3) Through-hole diameter: 310 mm for this series.
(4) Total circuits: configurable per order.
(5) Rated current: specified per circuit; multiple options available.
(6) Identification: additional -XXX may indicate cable length, connectors or installation variants.

Product Grade & Operating Life

• General — Working speed 0–200 rpm — Life ~20 million revolutions
• Industrial — Working speed 300–1000 rpm — Life ~60 million revolutions

Technical Parameters
Electrical

• Number of rings: customizable
• Rated current options: 2 A, 5 A, 10 A, 15 A, 20 A
• Rated voltage: 0–240 VAC/VDC
• Insulation resistance: ≥1000 MΩ @ 500 VDC
• Insulation strength: 1500 VAC @ 50 Hz, 60 s, 2 mA
• Dynamic contact resistance change: ≤ 10 mΩ

Mechanical / Environmental

• Working speed: 0–600 rpm (industrial grade up to 1000 rpm)
• Working temperature: -40 °C to +65 °C
• Working humidity: ≤70%
• Protection level: IP54
• Shell material: Aluminum alloy (some variants stainless steel)
• Electrical contact material: Precious metals; gold plating optional
• Lead wires: Colored Teflon; standard length 500 mm + 20 mm

Notes

• Power ring typical rating: 20 A per ring (maximum 48 rings).
• Signal ring typical rating: 5 A per ring (maximum 96 rings).
• Sleeve adapter can be supplied for bores smaller than nominal to fit reduced shaft diameters.
• Product is customizable: circuit counts, current/voltage ratings, connectors and mounting details available on request.

Technical Specifications

• Model / Series: DHK310
• Through-hole (inner bore): 310 mm (standard)
• Number of rings: customizable
• Rated current options: 2 A, 5 A, 10 A, 15 A, 20 A
• Rated voltage: 0–240 VAC/VDC
• Power ring typical rating: 20 A per ring (max 48 rings)
• Signal ring typical rating: 5 A per ring (max 96 rings)
• Insulation resistance: ≥1000 MΩ @ 500 VDC
• Insulation strength: 1500 VAC @ 50 Hz, 60 s, 2 mA
• Dynamic contact resistance change: ≤ 10 mΩ
• Working speed: 0–600 rpm (industrial grade up to 1000 rpm)
• Working temperature: -40 °C to +65 °C
• Working humidity: ≤70%
• Protection level: IP54
• Housing material: Aluminum alloy (some hollow-shaft variants stainless steel)
• Electrical contact material: Precious metals; gold plating optional
• Lead wires: Colored Teflon; standard length 500 mm + 20 mm
• Customizable features: sleeve adapter, circuit count, connectors, cable length and mounting options