Nyco NYCO-GN22 (380-g-Cart)

NYCO GREASE GN 22

Overview

NYCO Grease GN 22 is a premium NLGI Grade 2 synthetic aircraft grease formulated with a clay-thickened synthetic hydrocarbon base oil and fortified with anti-wear, extreme pressure, corrosion, and oxidation inhibitors. Designed for multipurpose lubrication across both civil and military aircraft, it provides outstanding protection over an exceptionally wide operating temperature range from -65°C to +177°C. Qualified to MIL-PRF-81322G, GN 22 is widely specified for airframe components, wheel bearings, and helicopter rotor systems.

Key Technical Specs

• Product Type: Synthetic aircraft grease
• NLGI Grade: 2
• Thickener: Clay
• Base Oil: Synthetic hydrocarbon
• Base Oil Viscosity: 40 mm�/s at 40°C; 7.3 mm�/s at 100°C
• Operating Temperature Range: -65°C to +177°C
• Dropping Point: 265°C
• Colour: Brown
• Load Carrying Capacity (LWI): 36 daN
• Bearing Performance: Passes 400-hour requirement at 177°C
• Copper Corrosion Rating: 1a
• Water Washout: 2.0%

Approvals & Specifications

• Approved MIL-PRF-81322G
• Approved DCSEA 395/C (formerly AIR 4222)
• Equivalent to DEF STAN 91-52 Issue 1 / XG-293
• Listed in Airbus CML 03GBB1
• Listed in ATR CML 04-004B
• Listed in CFMI CP 5076
• Listed in Boeing CML D00016
• Listed in Boeing CML D00233
• Listed in Boeing CML D00378
• Listed in Airbus Helicopters CM101
• Listed in Airbus Helicopters CM149
• Listed in Airbus Helicopters CM153
• NATO Code: G-395

Typical Applications

• General airframe lubrication including doors, flaps, slats, landing gear and horizontal stabilisers
• Wheel bearings for civil and military aircraft
• Wheel bearings for helicopters
• Main and tail rotor lubrication on helicopters
• General-purpose lubrication of aircraft mechanical assemblies
• Military and commercial aerospace maintenance operations

Key Features & Benefits

• Excellent performance across extreme operating temperatures
• Outstanding protection against corrosion and oxidation
• Contains anti-wear and extreme pressure additives for heavily loaded components
• Excellent bearing performance under sustained high temperatures
• High dropping point improves thermal stability
• Very low starting torque at low temperatures for cold-weather operation
• Excellent resistance to water washout
• Compatible with NBR-L elastomers
• Widely approved by major aircraft manufacturers and military specifications

Application Guidelines

• Apply to clean, contaminant-free lubrication points.
• Use in accordance with aircraft maintenance manuals and OEM lubrication schedules.
• Avoid mixing with incompatible grease chemistries unless approved by the equipment manufacturer.
• Monitor wheel bearing applications, as Nyco Grease GN 3058 is replacing GN 22 for many wheel bearing uses.
• Inspect grease condition during scheduled maintenance intervals.

Compatibility & Limitations

• Suitable for most civil and military fixed-wing aircraft and helicopters
• Approved for a wide range of OEM applications
• Compatible with NBR-L elastomer seals
• Provides excellent corrosion protection for steel bearing surfaces
• Being progressively replaced by Nyco Grease GN 3058 for wheel bearing applications

Packaging & Procurement

• Available through authorised NYCO aerospace distributors
• Supplied in multiple industrial packaging sizes (availability varies by region)
• NATO Supply Code: G-395

Why This Product is Chosen for AOG / MRO

• Single multipurpose grease simplifies aircraft lubrication inventories.
• Outstanding low-temperature performance supports cold-weather operations.
• Excellent corrosion protection extends component service life.
• Approved by major aerospace OEMs and military organisations.
• Suitable for both rotary-wing and fixed-wing aircraft maintenance.

Practical Suggestions for Your Team (AOG Mindset)

• Confirm OEM lubrication requirements before servicing wheel bearings.
• Remove old grease where practical before replenishment.
• Protect grease containers from contamination during maintenance.
• Use calibrated grease guns to avoid over-lubrication of bearings and moving assemblies.
• Store in clean, dry conditions to preserve grease performance.

Manufacturer / Aviation Spec Codes

• Product Name: NYCO Grease GN 22
• Manufacturer: NYCO Aeronautics & Defence
• Product Type: NLGI 2 synthetic aircraft grease
• NATO Code: G-395
• Specification: MIL-PRF-81322G
• Equivalent Specification: DEF STAN 91-52 Issue 1 / XG-293