10-Pack S684-2RS Stainless Steel Sealed Miniature Bearings 4x9x4mm

S684-2RS Stainless Steel Bearings
✔️ Pack of 10 Rubber Sealed Miniature Bearings

The S684-2RS is a stainless steel deep groove ball bearing set, made to keep small-scale machines and RC models running smooth. Each bearing is sealed on both sides to block out dust and dirt, packed with grease for long-lasting use, and sized at 4x9x4mm for precision setups.

✅ Stainless steel construction for durability
✅ Double rubber seals (2RS) for protection
✅ Pre-lubricated with grease
✅ Dimensions: 4mm inner diameter x 9mm outer diameter x 4mm width
✅ Dynamic load rating: 640 N
✅ Static load rating: 230 N
✅ Limiting speed with grease: 59,000 RPM
✅ Pack size: 10 bearings

☑️ Equivalent references: NSK 684-2RS, KOYO W684-2RS, NMB L-940-2RS
☑️ Fits: Kyosho, PICCO Cars RS600 Gas (1:10), Serpent 9000, Serpent Excel (1:8) 4WD, Serpent Impact-2 (2WD Pro & Sport), Serpent Vector, Serpent XL900 MKII

💡 Why use miniature stainless steel bearings in RC cars and precision tools?
Miniature bearings are built for high-speed, small-scale applications where space is tight.

• Provide smooth and reliable motion at extreme RPMs

• Rubber seals extend bearing life by blocking dirt and moisture

• Stainless steel construction resists wear and corrosion

A smart pick for hobbyists and pros who need reliable performance in compact builds. Grab your 10-pack today and keep your gear rolling at top speed.