SIKORSKY BS8ATC21 Bearing Hughes Helicopter P/n 369A7951-7

( Brand: Sikorsky ), ( Manufacturer Part Number: BS8ATC21 ), ( Part Type: Bearing )

Review SIKORSKY Bearing P/n New Sa Hughes Helicopter

The Sikorsky BS8ATC21 bearing, part number Hughes Helicopter 369A7951-7, is a crucial component of the main rotor assembly in various models of Hughes helicopters, including but not limited to the Hughes 369 series. This bearing is specifically designed to support the heavy loads and high rotational speeds that are characteristic of helicopter rotor systems.

The BS8ATC21 bearing is manufactured using high-quality materials, including a chrome steel outer race and a stainless steel inner race, ensuring superior strength and durability. This bearing also features a precision-machined surface finish on both races, providing an optimal surface contact for the rotating parts, which contributes to a smoother and more efficient operation.

This particular bearing is designed to operate in an environment with a maximum operating temperature of 200 degrees Fahrenheit (93 degrees Celsius) and a maximum operating speed of 6,500 revolutions per minute (RPM). It is important to note that operating conditions may vary depending on the specific helicopter model and application, and it is essential to consult the manufacturer's guidelines for the recommended operating parameters.

The BS8ATC21 bearing is supplied with an appropriate seal system to prevent contamination and ensure the longevity of the bearing. The seal system may include labyrinth seals, contact seals, or other types of seals depending on the specific application and environmental conditions.

Maintaining the BS8ATC21 bearing in good working condition is essential for the safe and efficient operation of the helicopter. Regular inspections and timely replacement of worn-out bearings are critical to prevent catastrophic failures and ensure the longevity of the helicopter.

In summary, the Sikorsky BS8ATC21 bearing, part number Hughes Helicopter 369A7951-7, is a vital component of Hughes helicopter rotor systems. It is designed to support the heavy loads and high rotational speeds of the rotor assembly while providing a smooth and efficient operation. The bearing is manufactured using high-quality materials and features a precision-machined surface finish for optimal contact between the rotating parts. It is important to maintain the bearing in good working condition through regular inspections and timely replacement to ensure the safe and efficient operation of the helicopter.

The Sikorsky S-76C Helicopter, bearing part number Hughes Helicopters 369A7951-7, is a popular choice for those in need of a reliable and efficient medium-sized helicopter. Here are some pros and cons to consider before making a purchase:

1. Excellent Performance: The Sikorsky S-76C is known for its impressive performance capabilities, including a maximum cruising speed of 155 knots and a range of over 500 nautical miles.

2. Comfortable Cabin: The helicopter's spacious cabin can accommodate up to twelve passengers, making it an ideal choice for executive transport, search and rescue missions, or other applications where passenger capacity is a priority.

3. Advanced Avionics: The S-76C is equipped with advanced avionics, including a glass cockpit and a digital autopilot system, which can improve safety and reduce pilot workload.

4. Proven Reliability: The Sikorsky S-76 series has a proven track record of reliability, with over 1,000 helicopters delivered to customers worldwide.

1. High Cost: The Sikorsky S-76C is a high-performance helicopter, and the cost of purchasing a new one can be prohibitive for some organizations or individuals.

2. Complex Maintenance: The helicopter's advanced systems and high-tech components require specialized knowledge and expertise to maintain, which can add to operating costs.

3. Size and Weight: The S-76C is a medium-sized helicopter, which means it requires a larger footprint and more infrastructure to operate compared to smaller helicopters.

4. Fuel Consumption: The helicopter's high performance comes at a cost in terms of fuel consumption, which can be a significant operating expense.

In conclusion, the Sikorsky S-76C Helicopter, bearing part number Hughes Helicopters 369A7951-7, offers excellent performance, a comfortable cabin, and advanced avionics, making it an attractive choice for those who need a reliable and efficient medium-sized helicopter. However, its high cost, complex maintenance requirements, size and weight, and fuel consumption may be drawbacks for some potential buyers.

Ultimately, the decision to purchase a Sikorsky S-76C should be based on an assessment of your specific needs, budget, and operational requirements. If the helicopter's benefits align with your needs, then it may be a worthwhile investment. On the other hand, if the costs and limitations are too significant, then it may be worth considering alternative options.

Details:

Buy More, Save Eligible free shipping. Buyer receives 1 each Sikorsky Bearing P/N BS8ATC21 same as MD Helicopter New Surplus.

part #: bs8atc21 prices

• $277.50-$799.99

specifications aviationpar:

• brand: Sikorsky
• mpn: Bs8atc21
• part type: Bearing

offer aviationpar:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: January 21, 2026

returns aviationpar:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

seller aviationpar:

• city: Arcadia, Florida
• # reviews: 10097
• rating: 100.0%

shipping aviationpar:

• transit: 3-8 Days
• service: Economy
• cost: $0.00
• type: Fixed
• class: Economy

general aviationpar:

• condition: New
• Parts Accessories > Aviation Parts Accessories > Parts

payments aviationpar:

• other
• credit card: Mastercard
• wallet: Google-pay

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