The SGS®️ CR Series shaft grounding system eliminates electrical bearing damage for the long-term. It is field installable with handheld tools without needing to uncouple equipment. It provides a long-term, low impedance pathway for current to flow around the bearing and is designed for 24/7 critical industrial operations.
The SGS® CR Series Advantage
Advantage #1
Sealed Running Surface
Sealed running surface keeping the environment out with bonus of wear materials being contained within the system and away from the brush’s running surface ensuring an open and clean path of resistance for current to flow for the entire wear life of the brush.
Advantage #2
Less Wear
CR Series experiences far less wear as its brush runs on the axial plane and not around the shaft’s outside diameter.
Advantage #3
Easily Maintainable
The SGS® CR Series is maintainable on the fly. The brush can be safely checked/changed while the motor is running. No other grounding system on the market has this feature.
Advantage #4
Quality Materials
All SGS® shaft grounding systems are engineered and manufactured in the USA. We use proprietary corrosion resistant materials that ensure a path of least resistance for current to flow is established and always maintained for the long term. Extensive field testing has led to identifying materials that allow the brush and brush running surface to wear slowly in concert with each other and it’s that relationship that keeps open a clean path of least resistance for current to flow.
The image shows the non-drive end of a Siemens motor with the fan cover and grounding system covered in debris. The grounding system barrel cap and brush have been removed allowing a look down the barrel to the rotor installed on the end of the shaft. Note that the brush running surface is very clean, allowing a path of least resistance for current to flow.
CR Series Compatibility
The following models are standard and are designed to be installed onto standard NEMA frame motors with a suitable flat surface for the grounding body to install. If end of shaft is pre-drilled and tapped, please contact DP&A Sales to ensure you receive the correct grounding system. Grounding system modifications may be needed if the fan cover cannot accommodate the grounding system body such as in the case of thinly stamped metal or plastic covers. Please contact DP&A Sales if you have an IEC motor.
- SGS® Model CR31MC
- 56-145T, TEFC
- SGS® Model CR31MC227
- 56-145T, ODP/OPSB/TEAO
- SGS® Model CR23SB
- 182T-256T, TEFC
- SGS® Model CR23SB227
- 182T-256T, ODP/OPSB/TEAO
- SGS® Model CR23LB
- 284T-365T, TEFC
- SGS® Model CR23LB227
- 284T-449T+, ODP/OPSB/TEAO
- SGS® Model CR23XB
- 404T-447T, TEFC
- SGS® Model CR23VB
- 449T+, TEFC