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Axially magnetized: the poles are on the two flat faces of the ring.NS
Magnetization directionAxially magnetized: the poles are on the two flat faces of the ring.Arrows show the direction of magnetization inside the magnet, pointing toward north.

Gold-plated N35 neodymium ring magnet, 8 mm OD × 4.5 mm ID × 4 mm thick. Axially magnetized through thickness. Listed pull force: 3.73 lb. SKU 8633.

⬇ Download CAD STEP / STL / DXF / PDF drawingnominal geometry, pre-filled with this part’s dimensions

N35 Gold-Plated Ring Magnet 8 OD × 4.5 ID × 4 mm – SKU 8633

Description
Additional information
Coatings
Magnetization
BH Curves

Gold-plated N35 neodymium ring magnet, 8 mm OD × 4.5 mm ID × 4 mm thick. Axially magnetized through thickness. Listed pull force: 3.73 lb. SKU 8633.

The center opening provides clearance for a shaft or locating feature. Axial magnetization places the poles on the annular end faces. Check the outside diameter, bore and thickness against the drawing and the mating components before specifying this ring.

Specifications

Magnet Size: OD 8 mm × ID 4.5 mm × T 4 mm
Tolerances: ±0.004"
Material: Rare Earth NdFeB
Grade: N35
Coating: Gold plated
Br (typical): 12,100 Gauss
BHmax (typical): 35 MGOe
Max Temperature: 80°C / 176°F
Magnetization: Axial
Pull Force: 3.73 lb
Approx. Weight: 0.0364 oz

Assembly and coating guidance

Provide clearance around the bore and support the ring in its housing. Avoid forcing this brittle magnet onto a shaft or tightening hardware directly against it. Validate the gold-plated finish against the actual contact materials and operating environment, and protect the coating from scratches during installation.

Listed pull force is a comparison value rather than a safe working load. Target steel thickness, air gaps, surface condition and loading direction affect actual holding force. Test the complete assembly at its intended working gap and temperature before production.

The listed maximum magnet temperature is 80°C. Allowable operating conditions depend on the magnetic circuit and opposing fields; check adhesives and housing materials against their own limits.

Compare materials in our neodymium grades chart, explore working gaps with the pull-force calculator, or browse related magnet sizes. For alternate dimensions or production quantities, send your requirements through the Magnet RFQ Builder.

Gold-plated N35 ring magnet OD 8 mm x ID 4.5 mm x 4 mm dimensional drawing

Weight 0.002273 lbs
Dimensions 0.314961 × 0.314961 × 0.157480 in
Diameter

8mm

Inner Diameter

4.5mm

Thickness

4mm

Strength / Grade

N35

Pull Force

1-5lbs

Magnetization Direction

Axial

Shape

Ring

Coatings

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
Axially magnetized: the poles are on the two flat faces of the ring.NS
Magnetization directionAxially magnetized: the poles are on the two flat faces of the ring.Arrows show the direction of magnetization inside the magnet, pointing toward north.

BH Curves

1745 in stock

Quantity Price Per Magnet
1 - 9 $0.70
10 - 49 $0.66
50 - 99 $0.63
100 - 999 $0.60
1000 - 4999 $0.49
5000 - 9999 $0.42
10000 + $0.35
EAN / UPC: 794969914774GTIN: 794969914774 SKU 8633 Categories , Tags , , , ,
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