8MSA4M.R0-66
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The B & R Automation 8MSA4M.R0-66 is part of the 8MS Three Phase Synchronous Motors series and features a solid hub type. This spur gear is crafted from high-strength steel, case-hardened for durability, and boasts a ground surface finish. With a tooth profile conforming to DIN 3962, it can reach a maximum peripheral speed of up to 20 m/s.
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Product Description:
The 8MSA4M.R0-66 Three Phase Synchronous Motor is manufactured by B & R Automation known for advanced industrial automation solutions. This motor is engineered for precise control and consistent operation across demanding environments. It operates on a 3-phase system and supports 400 to 480 VAC mains input voltage through a compatible servo drive. The motor contains 6 poles for smooth rotational performance in synchronized systems.
The 8MSA4M.R0-66 Three Phase Synchronous Motor has a self-cooling method that provides thermal efficiency without external cooling systems. The insulation class is F as per IEC 60034-1 which ensures durability under high thermal loads. This motor includes integrated thermal motor protection that limits the maximum winding temperature to 140 °C for safe operation. The motor maintains optimal function in environmental temperatures ranging from -15 °C to +40 °C. When operating beyond 40 °C. The rated current and stall current reduce by 10 % per 10 °C. It can handle up to a maximum environmental temperature of +55 °C. The installation is supported up to 2000 m above sea level. For installations over 1000 m, the rated current and stall current are reduced by 10 % per 1000 m. The maximum flange temperature is 65 °C for thermal safety at mechanical mounting points. The motor meets IP64 protection standards for resistance to dust ingress and water splashes. It complies with vibration severity level R for maintaining mechanical stability during continuous operation.
The 8MSA4M.R0-66 Three Phase Synchronous Motor has both horizontal and vertical mounting arrangements are supported which offer flexibility in integration. During storage it can tolerate temperatures from -20 to +60 °C with relative humidity up to 90 %, non-condensing. For transportation the allowable temperature range remains -20 to +60 °C. During operation, it supports relative humidity from 5 to 95 %, non-condensing.
Frequently Asked Questions about 8MSA4M.R0-66:
Q: Why is flange temperature limit set at 65 °C in 8MSA4M.R0-66?
A: The 65 °C cap ensures thermal safety at the mechanical mounting point. It helps prevent deformation or wear at interface surfaces during high-load operations.
Q: What installation benefit does dual mounting orientation offer in 8MSA4M.R0-66?
A: The horizontal and vertical mounting flexibility supports varied machine designs. This increases integration options in space-constrained control cabinets or open layouts.
Q: Why does current derate above 40 °C matter in the 8MSA4M.R0-66 motor?
A: The rated current reduces 10% per 10 °C over 40 °C to prevent overheating. It maintains electrical and mechanical integrity at elevated temperatures.
Q: Can the 8MSA4M.R0-66 handle fluctuating humidity during operation?
A: The motor operates reliably between 5% to 95% relative humidity (non-condensing). This tolerance makes it ideal for environments with dynamic moisture levels.
Q: What role does vibration severity level R play in long-term stability?
A: The R-level compliance ensures the motor resists excessive vibration, minimizing mechanical fatigue. It’s vital for installations near heavy industrial machinery.
