--- product_id: 21920079 title: "Koyo B-138 Needle Roller Bearing, Full Complement Drawn Cup, Open, Inch, 13/16\" ID, 1-1/16\" OD, 1/2\" Width, 5200rpm Maximum Rotational Speed" brand: "koyo" price: "€ 0.54" currency: EUR in_stock: false url: https://www.desertcart.at/products/21920079-koyo-b-138-needle-roller-bearing-full-complement-drawn-cup store_origin: AT region: Austria --- # 1/2" slim width for tight spaces 5200rpm max speed, heat-tolerant 13/16" ID precision fit Koyo B-138 Needle Roller Bearing, Full Complement Drawn Cup, Open, Inch, 13/16" ID, 1-1/16" OD, 1/2" Width, 5200rpm Maximum Rotational Speed **Brand:** koyo **Price:** € 0.54 **Availability:** ❌ Out of Stock ## Summary > ⚙️ Power your precision with endurance and speed! ## Quick Answers - **What is this?** Koyo B-138 Needle Roller Bearing, Full Complement Drawn Cup, Open, Inch, 13/16" ID, 1-1/16" OD, 1/2" Width, 5200rpm Maximum Rotational Speed by koyo - **How much does it cost?** € 0.54 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/21920079-koyo-b-138-needle-roller-bearing-full-complement-drawn-cup) ## Best For - koyo enthusiasts ## Why This Product - Trusted koyo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Certified Quality:** Meets ASTM F2162 standards for trusted, consistent bearing excellence - • **Space-Savvy Design:** Slim 1/2" width and drawn cup outer shell fit seamlessly into compact assemblies - • **Durability Engineered:** Through-hardened high-carbon chromium steel rollers resist wear and heat under heavy loads - • **Precision Performance:** Exact 13/16" ID and 1-1/16" OD ensure reliable, smooth rotation up to 5200rpm - • **Maximized Load Capacity:** Full complement rollers deliver superior radial strength for demanding applications ## Overview The Koyo B-138 Needle Roller Bearing features a full complement of through-hardened high-carbon chromium steel rollers housed in a drawn cup outer shell. Designed for high dynamic loads and tight spaces, it offers a 13/16" inner diameter, 1-1/16" outer diameter, and a slim 1/2" width. Rated for speeds up to 5200rpm and meeting ASTM F2162 quality standards, it ensures durable, high-performance operation in demanding industrial applications. ## Description This Koyo full complement drawn cup needle roller bearing is suitable for applications with high dynamic loads. It has a smaller cross-section than a machined needle roller bearing for use in restricted mounting spaces. The full complement of rollers provides a higher radial load-carrying capacity than caged rollers. The needle rollers are made of through-hardened, high-carbon chromium steel for durability and heat tolerance, and have contoured ends to optimize the distribution of contact stress. This radial needle roller bearing meets ASTM International standard ASTM F2162 for quality assurance, and is used in various applications, such as automotive and truck transmissions, agricultural and construction equipment, pumps and compressors, and two-cycle engines, among others.Roller bearings use rolling elements to maintain a 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. Roller bearings can be open on both ends (a shaft can pass through) or open on one end and closed on the other. An open end can be sealed or shielded to protect the bearing from solid contaminants and moisture that could reduce its lifespan. If an end is sealed, the sealing component is an elastomer lip that contacts the shaft. If it is shielded, the shielding is a non-contact lip, usually made of metal. 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.Koyo Bearings USA manufactures needle roller bearings, bearing assemblies, and needle rollers for automotive and industrial applications. The company, founded in 2009, is headquartered in Canton, OH, and meets International Organization for Standardization (ISO) standards 14001 and TS 16949 for quality assurance. ## Features - Drawn cup needle roller bearing for applications with high dynamic loads - Drawn steel outer shell (cup) has a reduced cross-section for use in restricted spaces - Full complement of rollers for higher radial load capacity than caged rollers - Through-hardened, high-carbon chromium steel rollers for heat tolerance and durability under heavy loads - Meets standard ASTM F2162 for quality assurance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007EDVHZS | | Bearing Number | B-138 | | Bearing Type | Roller Bearing | | Best Sellers Rank | #340,082 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #196 in Needle Roller Bearings | | Brand Name | Koyo | | Compatible Lubricant | Grease | | Customer Reviews | 4.6 4.6 out of 5 stars (75) | | Global Trade Identification Number | 00605790206665 | | Item Dimensions | 0.81 x 0.5 x 1.06 inches | | Item Thickness | 0.5 inches | | Item Weight | 18.14 g | | Manufacturer | Koyo Torrington | | Material Type | Alloy Steel | | Model | B-138 | | Number of Items | 1 | | Outside Diameter | 1.13 inches | | Part Number | B-138 | | Specification Met | Astm F2162 | | UPC | 605790206665 | | Unit Count | 1 Count | ## Product Details - **Bearing Number:** B-138 - **Brand:** Koyo - **Item Weight:** 18.14 g - **Item dimensions L x W x H:** 0.81 x 0.5 x 1.06 inches - **Material:** Alloy Steel ## Images ![Koyo B-138 Needle Roller Bearing, Full Complement Drawn Cup, Open, Inch, 13/16" ID, 1-1/16" OD, 1/2" Width, 5200rpm Maximum Rotational Speed - Image 1](https://m.media-amazon.com/images/I/51sbwn7j0QL.jpg) ![Koyo B-138 Needle Roller Bearing, Full Complement Drawn Cup, Open, Inch, 13/16" ID, 1-1/16" OD, 1/2" Width, 5200rpm Maximum Rotational Speed - Image 2](https://m.media-amazon.com/images/I/71C+l35nDZL.jpg) --- ## 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.at/products/21920079-koyo-b-138-needle-roller-bearing-full-complement-drawn-cup](https://www.desertcart.at/products/21920079-koyo-b-138-needle-roller-bearing-full-complement-drawn-cup) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-10-27*