Large Through Bore - TB 2.0 – 4.0

The TB 2.0 to 4.0 model is designed to fit over shafts from 1 to 4 inches. Standard models available with bore sizes of 2 or 4 inches and 4, 8, or 12 rings. If your application requires a nonstandard bore size, we will build the next larger size and install a reducing sleeve with the required bore size for a nominal charge. Please consult our staff for information concerning rotational speeds.

TB 2.0 to 4.0 Datasheet
Standard Specifications
Operating Current
7.5 amps per ring
Operating Voltage
1,000 VRMS
Electrical Noise
5μV, P-P, BW=10Hz-10kHZ at 8.5 mA, 500rpm
Leakage Resistance
10,000 MΩ (min)
Temperature Range
-30°F to 175°F
Encasement
Anodized aluminum
Ring Material
Solid coin silver
Brush Springs
Beryllium copper
Brush Contacts
Four 80% silver-20% graphite contacts per ring
Insulation
Delrin
Sealing
O-rings
Leads
20 AWG TFE covered wire, 3 ft long
Options
Current
Up to 30 amps per ring
Voltage
Up to 5,000 VDC
Temperature
Up to 250°F
Connectors
To customer specifications
Wire
Coax, twisted pair, thermocouple, custom cable assemblies to
customer specifications
Wire leads
Longer leads than 3 ft. standard lengths
Encasement
Split cover to facilitate inspection and
maintenance
Sample Applications Include:
Coil Tubing Reels
Food Processing
Packaging Machines
Bottling and Beverage Machines
Signal Transfer
Measurement and Sorting Equipment
Stress and Torque Readings
Defense Applications