Designed with a Separate Rotor and Dedicated Brush Block
SLIP RINGS
1.00 in Bore Slip Rings
A balanced slip ring solution that combines increased channel capacity with a compact housing. Commonly used in rotary systems that require clean integration without external shafts or internal routing.
Key Specifications
Current: 5 A standard, 10 A optional
Voltage: 60 V standard, up to 1000 V optional
Rings: Solid coin silver
Brushes: Silver graphite, Fabricast FAG180 (80% Ag / 20% C)
- 2 brushes per ring (5 A)
- 4 brushes per ring (10 A)
Noise: 10 mΩ max (2 brushes), 5 mΩ max (4 brushes)
Hi-Pot: 1000 VAC, 15 sec
Rotor: Molded ring complement with diallyl phthalate dielectric
Leads: 20 AWG (5 A), 16 AWG (10 A), MIL-W-16878 Type “E”
Options: 10 A capacity, hard-vacuum compatible
Data: 1 Gb Ethernet capable for high-speed data transfer
Design & Construction
The 1.00 inch bore slip rings are built around solid coin silver rings and silver graphite brushes selected for stable signal transfer and controlled electrical resistance during continuous rotation. The brush blocks are formed as a unified assembly using a rigid dielectric material, helping preserve brush geometry and insulation under higher rotational loads.
A precision-machined aluminum rotor sleeve supports the ring stack, with the conductive elements molded directly into the structure. This maintains concentricity across the larger bore size while supporting consistent electrical performance over extended duty cycles.
Typical Applications
1.00 in Bore Slip Rings are well suited for rotary systems that require additional through-bore clearance with electrical stability, including:
- Industrial automation equipment with shaft pass-through requirements
- Robotic joints and rotary actuators
- EO/IR platforms and stabilized sensor systems
- Test stands and instrumentation
- Defense and surveillance assemblies for cable routing space
Standard Brush Block
| Model | Rings | Length A (in) | Length B (in) | Length C (in) |
| 1201 | 2 | 0.75 | 0.56 | .230 |
| 1401 | 4 | 0.75 | 0.56 | .230 |
| 1905 | 5 | 0.87 | 0.7 | .200 |
| 1906 | 6 | 0.99 | 0.82 | .200 |
| 1907 | 7 | 1.11 | 0.94 | .200 |
| 1908 | 8 | 1.23 | 1.06 | .200 |
| 1909 | 9 | 1.35 | 1.18 | .200 |
| 19010 | 10 | 1.47 | 1.3 | .200 |
| 19012 | 12 | 1.71 | 1.54 | .200 |
| 19014 | 14 | 1.95 | 1.78 | .200 |
| 19016 | 16 | 2.19 | 2.02 | .200 |
| 19020 | 20 | 2.67 | 2.78 | .178 |
| 19024 | 24 | 3.15 | 3.26 | .178 |
Reduced Clearance Brush Block
| Model | Rings | Length A (in) | Length B (in) | Length C (in) |
| 1201RC | 2 | 0.75 | 0.56 | .230 |
| 1401RC | 4 | 0.75 | 0.56 | .230 |
| 1905RC | 5 | 0.87 | 0.7 | .200 |
| 1906RC | 6 | 0.99 | 0.82 | .200 |
| 1907RC | 7 | 1.11 | 0.94 | .200 |
| 1908RC | 8 | 1.23 | 1.06 | .200 |
| 1909RC | 9 | 1.35 | 1.18 | .200 |
| 19010RC | 10 | 1.47 | 1.3 | .200 |
| 19012RC | 12 | 1.71 | 1.54 | .200 |
| 19014RC | 14 | 1.95 | 1.78 | .200 |
| 19016RC | 16 | 2.19 | 2.02 | .200 |
| 19020RC | 20 | 2.67 | 2.78 | .178 |
| 19024RC | 24 | 3.15 | 3.26 | .178 |
Download the complete specifications, dimensions, and electrical details for 1.00″ Bore Slip Rings designed with a Separate Rotor and Dedicated Brush Block.
While this page highlights standard configurations, Fabricast routinely adapts brush blocks, ring spacing, materials, and lead options for application-specific requirements. If your project requires a variation in voltage, current, environment, or mechanical interface, custom designs are available.