Through-bore slip ring DHK025F-4-10A-002

for marine applicationsfor wind turbinefor cameras

Short Description

• DHK025F-4-10A-002 waterproof through-bore slip ring
• True through-bore Ø25.4 mm (compatible with shafts ≤ Ø25 mm) to pass drive shafts, pneumatic/hydraulic lines or fiber optics
• Compact envelope Ø78 mm OD × 28 mm length for space-constrained rotating equipment
• IP65 sealed construction with waterproof cable glands for humid, dusty or outdoor environments
• Precious metal multi-point contacts for ultra-low dynamic resistance < 10 mΩ and low electrical noise
• 4 circuits × 10 A (0–400 VAC/VDC), 360° continuous rotation to eliminate cable twisting

Overview
The DHK025F-4-10A-002 is part of the DHK025 series platform of waterproof through-bore slip rings designed for rotating assemblies that require a central passage of ≤ 25 mm. It provides four independent power circuits rated at 10 A each, IP65 environmental protection, and a compact sealed aluminum-alloy housing. The design is optimized for OEM industrial applications requiring combined power and signal transmission while saving installation space.

Key Technical Specifications

• Model: DHK025F-4-10A-002
• Inner Diameter (Bore): Ø25 mm (compatible with shafts ≤ Ø25 mm)
• Outer Diameter: Ø78 mm
• Overall Length: 28 mm
• Number of Circuits: 4
• Rated Current: 10 A per circuit
• Rated Voltage: 0–400 VAC
• Insulation Resistance: ≥1000 MΩ @ 1000 VDC
• Dielectric Strength: 1000 VAC @ 50 Hz, 60 s, 1 mA
• Dynamic Contact Resistance: < 10 mΩ
• Operating Speed: 0–100 rpm (higher speeds available on request)
• Operating Temperature: -20 °C to +80 °C
• Operating Humidity: < 70 %
• Protection Level: IP65 (upgradeable to IP66 / IP68)
• Housing Material: Aluminum alloy (stainless steel option available)
• Contact Material: Precious metal multi-point contacts
• Lead Wire Length: 500±50 mm (customizable)
• Installation: Flange mounting (collar optional)

Engineering Highlights

• True through-bore (Ø25 mm) enables direct passage of shafts, hydraulic/pneumatic lines or fiber optics to save assembly space
• IP65 sealed construction with waterproof cable glands for reliable operation in humid, dusty or light-washdown environments
• Precious metal multi-point brush technology ensures stable ultra-low dynamic resistance (< 10 mΩ), low electrical noise and maintenance-free operation
• Four independent 10 A power circuits suitable for motors, actuators, heaters or hybrid power+signal systems
• Rugged aluminum-alloy housing for corrosion resistance; stainless steel option for marine/offshore use
• 360° continuous rotation to eliminate cable twist and improve system reliability

Typical Applications

• Surveillance & security: PTZ/dome cameras, radar antennas
• Industrial automation: robot joints, rotary indexing tables, CNC rotary axes
• Medical equipment: CT scanners, rotating surgical lamps, imaging platforms
• Marine & offshore: ROVs, wind turbines, shipboard radar (stainless steel option)
• Display & advertising: rotating LED screens, exhibition turntables
• Packaging & machinery: filling, capping, labeling machines, cable reels
• Cleaning equipment: rotary washing heads, industrial cleaning systems

Customization Options

• Circuit configuration: add/remove power or signal rings (CAN, RS485, Ethernet, etc.)
• Current rating variants: 2 A / 5 A / 15 A / 20 A per ring
• Protection level: IP66 or IP68 upgrade for underwater/high-pressure washdown
• Lead wire: length, color-coding and terminations (aviation plugs, terminals, etc.)
• Mounting: custom flange pattern, collar style or customer interface
• Housing material: aluminum alloy (standard) or stainless steel (marine)
• Hybrid integration: combine with hydraulic/pneumatic rotary joints or fiber optic rotary joints

Technical Specifications

• Series: DHK025 series
• Model: DHK025F-4-10A-002
• Bore (Inner Diameter): Ø25 mm
• Outer Diameter: Ø78 mm
• Length: 28 mm
• Circuits: 4
• Rated Current per Circuit: 10 A
• Rated Voltage: 0–400 VAC
• Dynamic Contact Resistance: < 10 mΩ
• Protection: IP65 (optional IP66 / IP68)
• Housing Material: Aluminum alloy
• Operating Temperature: -20 °C to +80 °C