What are the measurements in inches.

According to Amazon: inside diameter and V groove width = 4mm = 0.1575 inch, outside diameter = 13mm = 0.5119 inch, groove deepnes = 1.5mm = 0.05905 inch. I use them to guide curtain cord.

I haven't seen any rust as of yet. The device I built that uses them is in my garage so doesn't get direct water on it, but it does get pretty humid.

Do these pulleys come with the pins?

Pins? No pins, just the pulleys.

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20pcs V Deep Groove Ball Bearings Pulley, Mini Bearings Deep V Groove Guide Pulley Rail Ball Bearings Wheel for Micro Pulley Systems,4x13x6mm

20pcs V Deep Groove Ball Bearings Pulley, Mini Bearings Deep V Groove Guide Pulley Rail Ball Bearings Wheel for Micro Pulley Systems,4x13x6mm

Product ID: 20782485

Details

Bearing Number
624
Brand
Chiloskit
Item Weight
10 g
Item dimensions L x W x H
0.51 x 0.51 x
Material
High Carbon

💨Optimized low friction for high speed

⚙️High precision carbon steel

🛡️Double metal shielded design

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Description

⚙️ Glide into precision with every spin — don’t let your projects lag behind!

EFFORTLESS EFFICIENCY - Low friction design minimizes energy loss for consistent, high-speed rotation.
PRECISION PERFECT FIT - Manufactured to strict ABEC standards with exact 4x13x6mm dimensions for seamless integration.
SHIELDED FOR LONGEVITY - Double metal shields lock in lubricant and block contaminants, extending bearing life.
VERSATILE POWER PLAYER - Ideal for 3D printers, small motors, power tools, medical devices, and more—upgrade your gear effortlessly.
ENGINEERED FOR ENDURANCE - Premium carbon steel ensures durability and smooth, low-noise operation under heavy loads.

The Chiloskit 20pcs V Deep Groove Ball Bearings Pulley set features 624ZZ high carbon steel bearings with double metal shields for enhanced durability and contamination resistance. Precisely sized at 4x13x6mm and optimized for low friction, these bearings deliver smooth, quiet, and efficient performance across diverse applications including 3D printing, power tools, and medical equipment.

Specifications

ASIN	B012KKTBRU
Bearing Number	624
Bearing Type	Ball Bearing
Best Sellers Rank	#158,072 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #878 in Deep-Groove Ball Bearings
Brand Name	Chiloskit
Compatible Lubricant	Grease
Customer Reviews	4.3 4.3 out of 5 stars (334)
Item Dimensions	0.51 x 0.51 x 0.24 inches
Item Thickness	6 millimeters
Item Weight	10 g
Manufacturer	Preamer
Material Type	High Carbon Steel
Model	V624ZZ
Number of Items	20
Outside Diameter	13 millimeters
Part Number	V624ZZ
UPC	710185353111
Unit Count	20 Count

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$21.95

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In stock

Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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