N40 neodymium ring magnet measuring 8 mm OD × 6 mm ID × 5 mm thick, axially magnetized with Ni-Cu-Ni coating and a listed 5.31 lb pull force. SKU 9226.
SKU 9226 is an N40 neodymium ring magnet measuring 8 mm OD × 6 mm ID × 5 mm thick. Axially magnetized and nickel plated, it provides a compact metric ring geometry for engineers and procurement teams sourcing magnets for sensing, alignment, shaft clearance, positioning, fixtures, and OEM assemblies.
| Outer Diameter | 8 mm |
|---|---|
| Inner Diameter | 6 mm |
| Thickness | 5 mm |
| Tolerance | ±0.004 in |
| Material | NdFeB |
| Grade | N40 |
| Coating | Ni-Cu-Ni |
| Magnetization | Axial |
| Listed Remanence (Br) | 12,850 gauss |
| Listed Maximum Energy Product | 40 MGOe |
| Listed Pull Force | 5.31 lb |
| Approximate Weight | 0.0291 oz |
| Listed Maximum Temperature | 80°C / 176°F |
Axial magnetization places the north and south poles on the two flat annular faces. The 6 mm center opening can accommodate a shaft, tube, pin, or fastener while leaving a narrow magnetic ring around the bore.
The listed 5.31 lb pull force is a reference value under specific test conditions, not a universal working-load rating. Air gap, target-steel thickness, contact area, surface finish, temperature, and load direction all influence performance. Use the Magnet Pull Force Calculator for preliminary screening and review What Is a True Radial Magnet? when comparing ring magnetization styles.
Browse stocked ring magnets for related dimensions, compare grades with the Neodymium Magnet Grades Chart, or submit the Magnet RFQ Builder for custom OD, ID, thickness, coating, tolerance, magnetization, or production requirements.

| Weight | 0.001818 lbs |
|---|---|
| Dimensions | 0.314961 × 0.314961 × 0.196850 in |
| Diameter | 8mm, .31" |
| Inner Diameter | .23", 6mm |
| Thickness | 0.19", 5mm |
| Strength / Grade | N40 |
| Pull Force | 1-5lbs |
| Magnetization Direction | Axial |
| Shape | Ring |
| Surface | Coating | Thickness(microns) | Color | Resistance |
|---|---|---|---|---|
| Passivation | 1 | Silver Grey | Temporary Protection | |
| Nickel | Ni Ni Ni Cu Ni |
10-20 | Bright Silver | Excellent Against Humidity |
| Zinc | Zn Cu Zn |
8-20 | Bright Blue Shinny Color |
Good Against Salt Spray Excellent against Salt Spray |
| Tin | Ni Cu Sn | 15-20 | Silver | Superior Against Humidity |
| Gold | Ni Cu Au | 10-20 | Gold | Superior Against Humidity |
| Copper | Ni Cu | 10-20 | Gold | Temporary Protection |
| Epoxy | Epoxy Ni Cu Epoxy Zn Epoxy |
15-25 | Black, Red, Grey |
Excellent Against Humidity & Salt Spray |
| Chemical | Ni | 10-20 | Silver grey | Excellent Against Humidity |
2754 in stock (can be backordered)
| Title | Quantity | Price Per Magnet |
|---|---|---|
| Quantity Discounts | 1 - 9 | 0% $3.50 |
| Quantity Discounts | 10 - 49 | 6.15% $3.28 |
| Quantity Discounts | 50 - 99 | 10% $3.15 |
| Quantity Discounts | 100 - 999 | 15% $2.98 |
| Quantity Discounts | 1000 - 4999 | 30% $2.45 |
| Quantity Discounts | 5000 - 9999 | 40% $2.10 |
| Quantity Discounts | 10000 + | 50% $1.75 |
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