Product Overview
The G8 Series Magnetic Rings from Phoenix America, INC are multipole target wheel magnets designed for radial sensing applications. These cost-effective magnets offer high resistance to demagnetization and operate reliably in demanding environments from -40C to 125C. They are engineered with tough environmental endurance and are very resistant to chipping. The alternating north and south magnetic poles are symmetrically located on the outer diameter, providing an optimal solution for motor applications requiring precise positioning and sensing.
Product Attributes
- Brand: Phoenix America, INC
- Series: G8 Series
- Product Type: Magnetic Rings, Multipole Target Wheel Magnets
- Mounting Style: Engineered Polymer Hub (Mounting Style H)
- Material Grades: Magnalox 300, Neobond 12M, Neobond 30M, Neobond 32P
- Environmental Endurance: High resistance to demagnetization, Tough environmental endurance, Very resistant to chipping
- Temperature Range: Operation from -40C to 125C
Technical Specifications
Physical Properties of Magnetic Material
| Characteristic | Value | Units |
|---|---|---|
| Tensile Strength | 6500 | PSI |
| Flexural Strength | 9750 | PSI |
| Flexural Modulus | 1.3 X 106 | PSI |
| Continuous Service Temperature | 100 | C |
Magnetic Properties
| Characteristic | Magnalox 300 | Neobond 12M | Neobond 30M | Neobond 32P | Units |
|---|---|---|---|---|---|
| Remanence (Br) | 1370 | 2500 | 4000 | 4300 | Gauss |
| Coercive Force (Hc) | 1180 | 2400 | 3250 | 2500 | Oersted |
| Energy Product (BHMAX) | 0.40 | 1.3 | 3.1 | 3.2 | MGOe |
| Intrinsic Coercive Force (Hci) | 2300 | 7500 | 7000 | 6900 | Oersted |
| Reversible Temperature Coefficient | -0.2 | -0.35 | -0.4 | -0.4 | /C |
| Specific Gravity | 3.5 | 4.0 | 4.7 | 4.45 | --- |
Available Pole Counts
| Pole Count |
|---|
| 8 |
| 12 |
| 16 |
| 20 |
Target Rotor Mounting Guidelines - Engineered Polymer Hub (Mounting Style H) for Press Fit Application
| Motor Shaft OD Size (nominal) | Shaft Tolerance | Magnet Bore MIN. (inch) | Magnet Bore MAX. (inch) | Recommended Operating Region |
|---|---|---|---|---|
| 2 mm (.0787) | +0.0000/-0.0005 | .0727 | .0757 | 0.0015 in. to 0.004 in. |
| 3 mm (.1181) | .1121 | .1151 | ||
| 1/8 in (.1250) | .1190 | .1220 | ||
| 5/32 in (.1563) | .1503 | .1533 | ||
| 4 mm (.1575) | .1515 | .1545 | ||
| 3/16 in (.1875) | .1815 | .1845 | ||
| 5 mm (.1969) | .1909 | .1939 | ||
| 6 mm (.2364) | .2304 | .2334 | ||
| 1/4 in (.2500) | .2440 | .2470 | ||
| 7 mm (.2758) | .2698 | .2728 | ||
| 5/16 in (.3125) | .3065 | .3095 | ||
| 8 mm (.3150) | .3090 | .3120 | ||
| 3/8 in (.3750) | .3690 | .3720 |
Other bore sizes available upon request.
Part Number Configuration Example: G8-H-188-50-R08
| Component | Description |
|---|---|
| G8 | Series |
| H | Design Style (Engineered Polymer Hub) |
| 188 | Bore Size (3/16 in) |
| 50 | Magnet Material (Neobond 12M) |
| R08 | Pole Count (8 Poles) |
Available Bore Sizes: 079 (2 mm), 118 (3 mm), 125 (1/8 in), 156 (5/32 in), 157 (4 mm), 188 (3/16 in - default), 197 (5 mm), 236 (6 mm), 250 (1/4 in), 276 (7 mm), 313 (5/16 in), 315 (8 mm), 375 (3/8 in).
Available Pole Counts: R08 (8 Poles), R12 (12 Poles), R16 (16 Poles), R20 (20 Poles).
2312271856_Phoenix-Contact-G08-H-0079-75-016_C7197225.pdf
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