Which Equipment is Suitable for 75G G-Proof Cooling Fans? How Does the Sanyo San Ace 120GP Series Achieve 75G Tolerance?-Capital-Cooling fan manufacturer

What is a G Proof Fan?
If a standard fan is likened to a person running on flat ground, a G Proof Fan is a "special forces" soldier with special training, capable of standing firm and running smoothly inside a high-speed centrifuge.
Simply put, a G Proof Fan is a specialized cooling fan designed to operate normally in environments with extremely high centrifugal acceleration.
Here, "G" refers to gravitational acceleration (1G ≈ 9.8 m/s²). If a standard fan is placed inside a high-speed rotating device, its blades will deform or even shatter due to the massive centrifugal force, and the bearings will wear out rapidly.

G Proof Fans, however, are specially designed to withstand pulling forces dozens or even hundreds of times their own weight.

Core Features

Superior Structural Strength: Typically uses metal (e.g., aluminum alloy) frames and high-strength resin blades to ensure the blades do not deform or break during high-speed rotation.

High-Reliability Bearings: Employs high-precision dual ball bearings capable of withstanding massive radial and axial loads, preventing jamming or wear under intense centrifugal force.

Anti-Vibration Design: In addition to centrifugal force, these fans must also cope with the severe vibrations generated during equipment operation, so their internal components are secured extremely firmly.

G-Proof Tolerance Level Reference
G Proof Fans are usually graded based on the acceleration they can withstand:

10G ~ 30G: Suitable for general industrial automation equipment.

50G ~ 75G: Suitable for high-end medical equipment (e.g., CT scanners) and precision instruments (such as the Sanyo San Ace 120GP series).

100G+: Used in extreme aerospace or special scientific research equipment.

G Proof Fan vs. Standard Fan: Key Differences

Comparison Dimension	Standard Cooling Fan	G Proof Fan
Core Application Scenarios	PC cases, servers, home appliances, general industrial equipment	CT/MRI medical equipment, semiconductor manufacturing, high-speed centrifuges, aerospace
Frame Material	Usually plastic (PBT, etc.)	Usually aluminum alloy or high-strength metal (e.g., 120GP series)
Blade Structure	Standard injection molding, thinner blades	Integrated high-rigidity design, thicker blades, resistant to centrifugal pulling
Bearing System	Sleeve bearing or single ball bearing	High-precision dual ball bearings (strong resistance to radial/axial loads)
Centrifugal Resistance	Very low (usually < 1G)	Extremely strong (can withstand 10G ~ 100G+ centrifugal acceleration)
Anti-Vibration Capability	Average; prone to noise or stalling under severe vibration	Extremely strong; internal components are tightly secured, suitable for severe vibration environments
Cost	Low (ranges from a few to dozens of dollars)	High (usually several to over ten times the price of standard fans)

Standard Cooling Needs (e.g., cooling PCs, power supplies, standard cases): Choose standard fans for high cost-effectiveness.

Extreme Environment Needs (high rotational speed, high centrifugal force, high vibration, high reliability requirements): Unhesitatingly choose G Proof Fans (such as the Sanyo San Ace 120GP series).

Applicable Equipment for 75G G-Proof Cooling Fans
These fans are primarily designed for equipment that requires high-speed rotation, endures massive centrifugal force, or operates in severe vibration environments. Typical scenarios include:

Medical Equipment: Such as CT scanners and MRI machines, which generate extremely high centrifugal acceleration during operation.

Aerospace Equipment: Such as aircraft and satellites, requiring reliable operation under extreme conditions.

Precision Instruments: Such as laser equipment and precision testing instruments.

Industrial and Transportation Equipment: Such as traction converters for high-speed trains/subways, CNC machine tools, and automated robots.

Core Design of the Sanyo San Ace 120GP Series for 75G Tolerance
The Sanyo San Ace 120GP series (e.g., model 9GP1224P1G001) can withstand a centrifugal acceleration of 75G (735 m/s²) for up to 1,000 hours, mainly due to the following unique designs:

（1）High-Rigidity Materials and Structure: Uses high-rigidity aluminum alloy for the frame, significantly enhancing overall structural strength and anti-deformation capabilities. The blades and rotor cover are integrally molded from resin, reducing connection points and effectively preventing loosening or disassembly under high-G environments.

（2）Precision Bearing System: Employs a high-precision dual ball bearing system that reduces friction and wear while ensuring smooth operation under high-speed rotation and severe vibration, minimizing mechanical noise and vibration.

（3）Optimized Airflow and Blade Design: Scientifically optimizes blade shape and angle to push airflow more effectively at high speeds, ensuring stable and efficient cooling airflow even in extreme environments.

（4）Smart PWM Control Technology: Supports PWM (Pulse Width Modulation) control, allowing smooth speed adjustment based on actual cooling needs. This not only saves energy and reduces noise but also maintains operational stability under different working conditions.

Through these designs, the Sanyo San Ace 120GP series ensures superior G-force tolerance while maintaining a long lifespan (expected life of 40,000 to 70,000 hours) and low noise levels (approx. 62dB).

Core Specifications of the Sanyo 120GP Series

Model	Rated Voltage	Rated Current	Rated Power	Speed	Max Airflow	Max Static Pressure
9GP1224P1G001	24V DC	1.6 A	38.4 W	6550 RPM	7.0 m³/min (247 CFM)	370 Pa
9GP1248P1G001	48V DC	0.8 A	38.4 W	6550 RPM	7.0 m³/min (247 CFM)	370 Pa

Key Selection Advice

(1) Select Voltage Based on Equipment Power Supply:

If your equipment motherboard or power output is 24V, choose 9GP1224P1G001.

If the equipment power supply is 48V (common in communication base stations or large industrial equipment), choose 9GP1248P1G001.

Note: Both models have identical power and cooling performance; they only differ in operating voltage and current.

(2) Pay Attention to Operating Temperature Range:
This series supports a wide temperature range of -20℃ ~ +70℃, making it highly suitable for harsh industrial sites or the interior of medical equipment.

(3) Confirm Control Requirements:
This series comes standard with PWM (Pulse Width Modulation) functionality, supporting smooth speed adjustment via external signals. If your equipment needs to automatically adjust fan speed based on temperature for energy saving or noise reduction, this series is an ideal choice.

🔥 Equipment overheating and throttling? Noise exceeding standards and facing complaints?

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