Designed with a self-contained rotor and brush assembly
SLIP RINGS
1.50 in Bore Slip Rings
Fabricast 1.50 inch bore self-contained slip rings are designed for rotary systems that require greater internal routing capacity while maintaining a compact, integrated assembly. The enlarged bore provides additional space for shafts, wiring, or fluid lines, while the self-contained rotor and brush structure preserves fixed electrical alignment within the housing. This configuration supports stable power and signal transfer in more mid-size applications without introducing the complexity of larger slip ring designs.
Key Specifications
Current: 5 A std, 10 A opt
Voltage: 60 V std, up to 1000 V opt
Rings: Solid coin silver
Brushes: Silver graphite, Fabricast FAG180 (80% Ag / 20% C)
- 2 brushes/ring (5 A)
- 4 brushes/ring (10 A)
Noise: 10 mΩ max (5 A), 5 mΩ max (10 A)
Hi-Pot: 1000 VAC, 15 sec
Rotor: One-piece aluminum sleeve, molded dielectric
Leads: 20 AWG (5 A), 16 AWG (10 A), MIL-W-16878 Type “E”
Data: 1 Gb Ethernet capable for high-speed data transfer
Options: 10 A capacity, hard-vacuum compatible
Design & Construction
Fabricast Self-Contained 1.50 inch bore slip rings are developed for rotating assemblies that require expanded internal space while maintaining a contained, factory-aligned electrical system. The electrical path is formed using coin silver rings working against silver graphite contact elements, supporting consistent current flow during continuous rotation.
The enclosed housing supports fixed internal geometry and electrical spacing, reducing sensitivity to installation variables in larger assemblies. By integrating the rotor, brush system, and insulation into a single unit, this design accommodates increased rotational mass and routing complexity while maintaining controlled internal contact conditions.
Typical Applications
Self-Contained 1.50 in Bore Slip Rings are commonly applied in mid-to-large rotary systems where increased pass-through clearance and simplified installation are both important, including:
- Rotary platforms and indexing systems
- Automation equipment with bundled cabling or shafts
- Rotating sensor housings and inspection systems
- Defense and aerospace subsystems requiring enclosed electrical interfaces
- Industrial machinery with moderate-to-large bore requirements
Standard
| Model | Rings | Length A (in) | Length B (in) |
| 2982 | 2 | 1.48 | 1.56 |
| 2983 | 3 | 1.48 | 1.56 |
| 2984 | 4 | 1.48 | 1.56 |
| 2986 | 6 | 1.72 | 1.81 |
| 2988 | 8 | 1.96 | 2.06 |
| 29810 | 10 | 2.2 | 2.31 |
| 29812 | 12 | 2.44 | 2.56 |
| 29814 | 14 | 2.68 | 2.81 |
| 29816 | 16 | 2.92 | 3 |
| 29820 | 20 | 3.4 | 3.5 |
| 29824 | 24 | 3.88 | 4 |
Reduced Clearance
| Model | Rings | Length A (in) | Length B (in) |
| 2982RC | 2 | 1.48 | 1.56 |
| 2983RC | 3 | 1.48 | 1.56 |
| 2984RC | 4 | 1.48 | 1.56 |
| 2986RC | 6 | 1.72 | 1.81 |
| 2988RC | 8 | 1.96 | 2.06 |
| 29810RC | 10 | 2.2 | 2.31 |
| 29812RC | 12 | 2.44 | 2.56 |
| 29814RC | 14 | 2.68 | 2.75 |
| 29816RC | 16 | 2.92 | 3 |
| 29820RC | 20 | 3.4 | 3.5 |
| 29824RC | 24 | 3.88 | 4 |
Download the complete specifications, dimensions, and electrical details for 1.50″ Bore Slip Rings designed with a self-contained rotor and brush assembly.
While this page shows standard self-contained configurations, Fabricast routinely customizes enclosed slip ring assemblies, including internal brush systems, materials and lead options, to meet specific voltage, current, environmental, and mechanical requirements.