--- product_id: 46802705 title: "6203 ZZC3 GXM Koy Ball Bearing, 17 mm Bore Size, 40 mm Outer Diameter, 1.5748\" Width" brand: "koyo usa" price: "58.26 DT" currency: TND in_stock: true reviews_count: 2 category: "Koyo Usa" url: https://www.desertcart.tn/products/46802705-6203-zzc3-gxm-koy-ball-bearing-17-mm-bore-size store_origin: TN region: Tunisia --- # 40mm outer diameter for stability 17mm bore precision fit Double shielded for contamination defense 6203 ZZC3 GXM Koy Ball Bearing, 17 mm Bore Size, 40 mm Outer Diameter, 1.5748" Width **Brand:** koyo usa **Price:** 58.26 DT **Availability:** ✅ In Stock ## Summary > 🛠️ Keep your machines running smoother, longer — don’t get left behind! ## Quick Answers - **What is this?** 6203 ZZC3 GXM Koy Ball Bearing, 17 mm Bore Size, 40 mm Outer Diameter, 1.5748" Width by koyo usa - **How much does it cost?** 58.26 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/46802705-6203-zzc3-gxm-koy-ball-bearing-17-mm-bore-size) ## Best For - koyo usa enthusiasts ## Why This Product - Trusted koyo usa brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sealed for Life:** Double shielded design packed with Mobil Polyrex EM grease for lifetime lubrication and contamination protection. - • **Precision Performance:** ABEC 1 tolerance with C3 clearance maintains alignment and stability even at 120°C (248°F). - • **Versatile Application:** Ideal for transmissions, electric motors, pumps, robots, and gearboxes—power your projects with confidence. - • **Engineered for Endurance:** Vacuum-degassed high carbon chromium steel ensures superior lifespan and wear resistance. - • **Smooth & Silent Operation:** Steel/polyamide cages evenly distribute load, reduce friction, and dampen noise and vibration. ## Overview The Koyo 6203 ZZC3 GXM deep groove ball bearing features a 17mm bore and 40mm outer diameter, crafted from vacuum-degassed high carbon chromium steel for exceptional durability. With ABEC 1 precision and C3 clearance, it excels under high speeds and temperatures up to 120°C. Double shielded and pre-filled with Mobil Polyrex EM grease, it offers lifetime lubrication and robust contamination protection, making it perfect for demanding industrial and mechanical applications. ## Description The Koyo 6200 series is a deep groove ball bearing made from quality vacuum-degassed high carbon chromium bearing steel resulting in superior bearing life. Due to the deep groove geometry the bearing can withstand high speeds, radial loads, and axial loads. Also, with standard ABEC 1 precision tolerances and larger C3 clearance bearings maintain alignment and stability even at higher temperatures (120 degrees C/248 degrees F). The 6200 series bearings utilize steel or polyamide cages to equally separate balls. This ensures loads are distributed evenly and reduces friction, increase speed, and dampens noise and vibration. In addition, the series provides options for a sealed bearings or unsealed bearings. Sealed bearings utilize a shield or rubber seal to keep contaminates such as dirt and grime out and lubricant in and are packed with Mobil Polyrex EM for lifetime lubrication. Unsealed bearings allow for in place lubrication addition and replacement. The Koyo 6200 series can be used in various applications including transmissions, electric motors, pumps, robots, and gear boxes. Rolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads. These elements can be one of the following types: ball, cylindrical, spherical, barrel, needle, spindle, or tapered. All rolling bearings are open, shielded, or sealed. Sealed bearings are lubricated with oil or grease in the bearing factory, while open and shielded bearings are meant to be lubricated in place, with periodic reapplication of lubrication, based on use. The shield protects the working parts of the bearing from environmental debris that may be introduced and could reduce the ball bearing speed and lifespan. Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others. Review: Rebuilt a John Deere mowing deck spindle with these bearings - These bearings are a perfect fit and just right for the application. Review: Fits and is quiet - Did the job on a treadmill motor. ## Features - Accommodates both radial and axial loads - Super finished raceways - Inner and Outer rings hardened for extended life and wear protection - Double shielded to help with contamination while improving lubrication retention - Filled with Polyrex EM Grease ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00IIKZIXS | | Bearing Number | 6203 | | Bearing Type | Ball Bearing | | Best Sellers Rank | #920,848 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8,323 in Deep-Groove Ball Bearings | | Brand Name | Koyo USA | | Compatible Lubricant | Grease | | Customer Reviews | 4.6 4.6 out of 5 stars (3) | | Global Trade Identification Number | 00605790058042 | | Item Thickness | 1.57 Inches | | Manufacturer | Koyo Corporation of USA | | Material Type | 52100 Steel | | Outside Diameter | 40 Millimeters | | Specification Met | ABEC 1 | | UPC | 605790058042 | | Unit Count | 1.0 Count | ## Product Details - **Bearing Number:** 6203 - **Brand:** Koyo USA - **Item Thickness:** 1.57 Inches - **Material:** 52100 Steel - **Specification Met:** ABEC 1 ## Images ![6203 ZZC3 GXM Koy Ball Bearing, 17 mm Bore Size, 40 mm Outer Diameter, 1.5748" Width - Image 1](https://m.media-amazon.com/images/I/61WTIdpjAAL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Rebuilt a John Deere mowing deck spindle with these bearings *by R***Y on May 19, 2023* These bearings are a perfect fit and just right for the application. ### ⭐⭐⭐⭐⭐ Fits and is quiet *by P***Y on May 3, 2019* Did the job on a treadmill motor. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/46802705-6203-zzc3-gxm-koy-ball-bearing-17-mm-bore-size](https://www.desertcart.tn/products/46802705-6203-zzc3-gxm-koy-ball-bearing-17-mm-bore-size) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-06*