No products
View larger 
AirsoftParts Steel Bearings (7 mm)
AirsoftParts steel bushings (7 mm) are precision CNC-machined bushings for AEG gearboxes with 7mm bearing seats. An electroless nickel coating with a hardness of 660–850 HV increases wear and corrosion resistance while providing a smooth sliding surface. The set contains 6 pieces, and the manufacturer specifies use with springs up to M170.
Another product variants
SilverOn stock
SilverOn stock
SilverOn stock
25+ years of proven equipment and accessories.
Accessories
4,19 € In StockAirsoftParts Bushing ToolASPARTS037
AirsoftParts bearing installation tool is a practical service tool for installing bearings into a gearbox. The duralumin construction reduces the risk of scratching the bearing surface during installation, while the circumferential grooves provide a secure grip and precise handling. A useful tool for building, repairing and upgrading AEG gearboxes.
4,19 €In Stock- SA Silicone Grease (50 g)
SPARMS439
Specna Arms silicone grease in a practical 50g package is an essential service lubricant for airsoft gun maintenance. It is particularly suitable for O-rings, seals, AEG pneumatic systems, GBB valves and HPA systems. It helps reduce friction, protects sealing components from drying out and extends their service life.
6,34 €Out of stock
AirsoftParts 7 mm Steel Bushings With Electroless Nickel Plating
AirsoftParts 7 mm steel bushings are plain bushings manufactured on precision CNC machines in the Czech Republic and designed for gearboxes with 7mm gear axle bearing holes. The design features relieved contact surfaces between the bushings and gears, intended to reduce the friction area and promote smooth operation of the gear train. The surface is treated with an electroless nickel coating with a hardness of 660–850 HV (58–63 HRC), which increases wear and corrosion resistance while providing a very smooth sliding surface. The bushings intentionally have no lubrication groove, which according to the manufacturer could contribute to wear on the gear axles. These are solid bushings without balls, suitable even for mechanically demanding builds; the manufacturer specifies use with springs up to M170.
Key Features
Solid Steel Construction
Steel bushings contain no balls or other moving parts and provide solid support for the gear axles inside the gearbox.
Electroless Nickel Plating
The nickel-plated surface reaches a hardness of 660–850 HV (58–63 HRC) and contributes to high wear resistance, corrosion resistance and low friction.
Relieved Contact Surfaces
Relief in the areas contacting the gears reduces the friction surface area and promotes smoother gear operation with lower mechanical losses.
No Lubrication Groove
The bushings have no lubrication groove that could create an edge acting against the gear axle. This design maintains a continuous sliding surface around the axle.
CNC-Machined in the Czech Republic
The bushings are machined on precision CNC machines in the Czech Republic, and the manufacturer recommends them for gearboxes with 7mm bearing seats and springs up to M170.
Technical Specifications
- Type: bushings for AEG gearbox
- Diameter: 7 mm
- Gear axle diameter: 3 mm
- Material: steel
- Manufacturing: CNC machining
- Surface finish: electroless nickel plating
- Surface hardness: 660–850 HV (58–63 HRC)
- Lubrication groove: no
- Compatibility: gearboxes with 7mm bearing seats
- Maximum recommended spring: M170
- Country of manufacture: Czech Republic
Package Contents
- 6× 7 mm steel bushing
Frequently Asked Questions (FAQ)
What Is the Difference Between These Bushings and Ball Bearings?
Bushings have a solid construction without balls or other moving parts. The gear axle rotates directly against the smooth sliding surface of the bushing, providing a mechanically simple design suitable even for heavily stressed builds.
What Is the Purpose of Electroless Nickel Plating?
The nickel coating creates a smooth, hard and corrosion-resistant surface. The manufacturer specifies a hardness of 660–850 HV (58–63 HRC), high wear resistance and good sliding properties.
Which Gearboxes Are the Bushings Compatible With?
They are designed for gearboxes using 7mm bearing seats. Before installation, it is advisable to verify the actual diameter of the holes in the specific gearbox and ensure the bushings are seated correctly.
What Spring Strength Can Be Used With the Bushings?
The manufacturer specifies use with springs up to M170. However, the entire assembly must be appropriately rated for the load – this specification alone does not determine the maximum load capacity of the other gearbox components.
| Variants | ⌀ 3 mm |
| Color | Silver |
| Bearings (mm) | 7 (mm) |
| Bearings (material) | Metal |
| Počet kusů v balení | 6 |