# Dodge 128215 Bearing End Cap and Cover Component - MROSupply.com ***Dodge 128215 bearing end cap and cover component for industrial bearing assemblies. Provides environmental sealing and protection against dirt and moisture in mounted bearing housings. Compact cover design ensures reliable bearing performance and extended service life.*** ## Product details: - Catalog number: 128215 - SKU: 125487 - Price: ***$16.74*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [Dodge](https://www.mrosupply.com/brands/dodge/) - Category: - [Bearing End Caps & Covers](htts://www.mrosupply.com/bearings/bearing-tools-accessories/bearing-end-caps-covers/) - [Bearing Tools & Accessories](htts://www.mrosupply.com/bearings/bearing-tools-accessories/) - [Bearings](htts://www.mrosupply.com/bearings/) - Unit of measure: each - Weight: 0.160 lb - UPC: 782475958443 - Technicall support: contact supplier for technical support on +1-864-284-5700 ## Product images: - https://static.mrosupply.com/images/noimage.webp ## Product attributes; - Component Family: Cover - Product Line: PT Components - Weight: 0.16 lb ## Suggested products: - [Dodge 482152 14MX-56S-90-4030 high torque timing pulley with 14mm pitch, 56 teeth, and 90mm bore, designed for 4030 Taper-Lock bushing. Suitable for synchronous drive applications requiring precise timing and high torque transmission in industrial power transmission systems.](https://www.mrosupply.com/products/2077496/as-markdown/) - [Dodge 482153 14MX-60S-90-4030 HT500 high torque timing belt sprocket with 14mm pitch, 60 teeth, and Taper-Lock bushed bore design. Modified curvilinear tooth profile provides higher load capacity than standard timing sprockets for industrial synchronous drive applications.](https://www.mrosupply.com/products/2077497/as-markdown/) - [Dodge 820000 OPTIFY Performance Sensor provides real-time monitoring and data collection for industrial equipment, enabling predictive maintenance and performance optimization in manufacturing and processing applications.](https://www.mrosupply.com/products/49/as-markdown/) - [Dodge 482158 14MX-80S-90-4030 HT500 synchronous timing pulley with 14mm pitch and 80 teeth, designed for high torque drive applications requiring zero-slip transmission. Taper-Lock 4030 bushing mount provides secure shaft attachment and easy installation. Precision-machined for reliable performance in industrial power transmission systems.](https://www.mrosupply.com/products/2077502/as-markdown/) - [Dodge 128205 EC-205-X polymer-housed bearing insert with 2-3/8" outer diameter. Designed for integration into Dodge mounted bearing assemblies, this insert features a polymer housing for corrosion resistance and compatibility with various pillow block and flange housings.](https://www.mrosupply.com/products/132393/as-markdown/) ## Product's reviews: - Great - great - Shaft - Worked well to repair Dodge Gear Box - E20 - This is exactly what I needed. Price was way below my local business that carries couplings. Thanks. - Recent purchase - My order with MRO was easy, quick and priced just right! Assistance over the phone was professional and helpful. I will be making more orders in the future. JG ## FAQ: - How does Dodge warranty evaluation work if a product fails?: Failed units go to Dodge's US plants for evaluation — about a week in transit plus one to two weeks of analysis, and you get the findings either way. Warranty covers workmanship and material defects; failures caused by the application (lubrication, installation) fall to the customer, but the failure analysis tells you the root cause so it doesn't repeat. - When should I choose a shielded bearing instead of a sealed one?: Use shields for high-speed applications (electric motors, fans) running in dry, clean environments. Shields don't reduce max RPM, whereas seals can reduce speed ~40%. For wet, dusty, or food-processing environments, seals are the better choice. - Do bearing seals increase friction and heat?: Yes. Contact seals (2RS) increase torque noticeably due to the rubbing inner lip. Non-contact seals (2RU) eliminate this friction penalty while still blocking dust and moisture — a good middle ground for moderate-speed applications. - What temperature range can bearing end caps handle?: Metal shields tolerate the widest temperature range, followed by specialty rubber compounds; standard nitrile seals are the most limited. Exact limits vary by seal material and manufacturer, so check the datasheet for your specific part before specifying for a high- or low-temperature application. - How do end caps and seals extend bearing life?: End caps prevent dirt, moisture, and debris from entering the bearing cavity, where they would cause wear and lubricant breakdown. Sealed bearings last substantially longer than unsealed units in contaminated environments because lubrication stays clean and the rolling elements stay protected. - What's the difference between bearing shields (ZZ) and seals (2RS)?: Shields are thin metal barriers that block larger particles but don't seal tight—they add minimal friction. Seals are rubber-bonded to the outer ring with an inner lip that contacts the inner ring, stopping dust and moisture at the cost of higher torque and heat generation. - How often should bearing tools be serviced?: Inspect bearing pullers and installation tools for wear and corrosion before each use, and perform annual preventive maintenance on hydraulic units. Keep tools clean and dry—worn jaws or damaged threads reduce pulling efficiency and risk bearing damage during use. - What is a bearing puller and why would I need one?: A bearing puller is a mechanical or hydraulic tool designed to safely remove pressed bearings from shafts without damaging the shaft or bearing. They're essential for bearing replacement, preventive maintenance, and troubleshooting in industrial and automotive equipment. - What's the difference between a two-jaw and three-jaw bearing puller?: Two-jaw pullers work best for smaller bearing bore diameters in tight spaces, while three-jaw pullers distribute pulling force more evenly across larger bearings. Three-jaw designs reduce the risk of bearing damage and are preferred for precision machinery and heavy-duty applications. - How do I know what size bearing puller I need?: Bearing puller size is determined by the bearing bore diameter and the pulling force required for your application. Most industrial bearings need 2–10 ton capacity pullers—check your bearing bore size in millimeters and consult the puller capacity rating. - What's the proper way to install a bearing without a press?: Small bearings can be installed by hand using a rubber mallet and bearing sleeve, while larger bearings require a hydraulic press or bearing installation tool. Always use a pilot sleeve matching the bearing bore to prevent misalignment and ensure even pressure distribution. - How should I maintain and lubricate bearings?: Lubrication Importance — Improper lubrication causes over 40% of bearing failures. Proper bearing lubrication prevents friction damage, dissipates heat, protects against corrosion, and acts as a barrier against contaminants (dust, moisture, debris). Lubrication Selection — Choose between grease and oil based on: - Grease: Suitable for low-to-medium speed, sealed bearings, and applications without continuous circulation. Easier to apply and retain. Common for motors, household appliances, and sealed units. - Oil Mist or Circulating Systems: Better for high-speed applications, high-temperature environments, and heavy-load machinery where heat dissipation is critical. Best Practices: 1. Map all lubrication points and create a maintenance schedule. 2. Use the correct lubricant type and viscosity grade specified by the bearing manufacturer. 3. Store lubricants in sealed, labeled containers away from moisture and contaminants. 4. Monitor bearing temperature and vibration; unusual heat or noise may indicate inadequate lubrication or bearing wear. 5. Replace bearings before reaching L10 life if contamination or lubrication failure is detected. - What is a bearing and what does it do?: A bearing is a mechanical component that enables smooth rotational or linear motion by reducing friction between moving parts. Bearings support loads and facilitate the transfer of forces between moving elements, preventing direct metal-to-metal contact that would cause wear and heat buildup. Rolling element bearings contain balls or rollers that rotate within races (raceways) to minimize friction. Common types include ball bearings (used for moderate loads and high speeds), roller bearings (used for heavy loads at medium speeds), and angular contact bearings (designed for combined radial and axial loads). Bearings are essential in industrial equipment including motors, pumps, compressors, gearboxes, turbines, and conveyor systems. - How do I choose the right type of bearing for my application?: Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design. - What bearing materials are available and which should I use?: Standard bearing materials include: - Chrome Steel — Premium bearing steel used by SKF, NSK, Timken, and most manufacturers. Offers excellent hardness, fatigue resistance, and durability in standard industrial applications. Most common for ball and roller bearings. - Stainless Steel — Provides corrosion resistance for applications in wet, humid, or chemically corrosive environments. Used in food processing, marine, and pharmaceutical equipment. - Ceramic Hybrid Bearings — Combine steel races with ceramic rolling elements. Offer reduced friction, lower heat generation, and higher temperature capability. Used in high-speed, high-precision applications and aerospace. - Polymeric Bearings — Utilize fluoropolymer composites with embedded graphite or PTFE. Provide low friction in high-speed applications where lubrication film breakdown would be problematic. Material selection depends on operating environment (temperature, moisture, chemical exposure), speed, load, and precision requirements. Standard chrome steel bearings suit most industrial MRO applications. - What is bearing life (L10) and how does it affect my equipment maintenance?: L10 Life Definition (ISO 281) — L10 is the basic rating life at which 90% of a large group of identical bearings are statistically expected to survive under constant load and speed. It is calculated in millions of revolutions using the formula: L10 = (C/P)^p, where C is the basic dynamic load rating, P is the equivalent dynamic bearing load, and p is the life exponent (3 for ball bearings). Converting L10 to Operating Hours — To express L10 life in hours: L10h = (L10 × 10^6) / (60 × n), where n is rotational speed in RPM. For example, a bearing with L10 = 1,000 million revolutions operating at 3,600 RPM has approximately L10h ≈ 4,630 hours. Modified Life (L10a) — Actual bearing life also depends on lubrication quality, contamination, speed, temperature, and bearing accuracy. ISO 281 defines a modified life factor (a₁ × aISO) that adjusts the theoretical L10 for these real-world conditions. High-quality lubrication and proper maintenance can extend bearing life significantly; poor lubrication or high contamination reduces it. Why It Matters for Maintenance — L10 life helps you schedule preventive maintenance, budget for bearing replacement, and select bearings adequate for your duty cycle. - How do I choose the right bearing for my application?: Bearing selection depends on five key factors: 1. Load Type and Direction — Determine whether your application has radial loads (perpendicular to shaft), axial loads (along the shaft), or combined loads. Deep groove ball bearings suit primarily radial loads; tapered roller bearings excel at combined loads; thrust bearings handle pure axial forces. 2. Rotational Speed — Ball bearings support higher speeds with lower friction. Roller bearings are better for medium-speed, heavy-load applications. Verify bearing speed ratings against your operating RPM. 3. Load Capacity — Select a bearing with adequate load capacity for your application. Basic dynamic load rating (C) and basic static load rating (C₀) determine how much load the bearing can safely carry. 4. Lubrication Requirements — Choose between grease and oil lubrication based on speed, temperature, and load. High-speed or high-temperature applications typically require oil circulation; lower-speed applications can use grease. 5. Precision and Rigidity — Evaluate your application's tolerance for runout deviation. High-precision applications require tighter tolerances and higher-grade bearings. - What are dynamic and static load ratings, and why do they matter?: Static Load Rating (C₀) — The maximum load a stationary or slowly rotating bearing can support without permanent deformation of its rolling elements or raceways. Defined by ISO 76 as the load producing 0.01% permanent deformation of the rolling element diameter. Static load capacity is the limiting factor when a bearing operates at very low speeds or remains stationary under heavy loads. Dynamic Load Rating (C) — The constant load a bearing can endure for a specified number of revolutions (the L10 life, at which 90% of identical bearings are expected to survive). Dynamic load rating determines how long a bearing will last under rotating or oscillating motion. ISO 281 defines the L10 calculation using the formula: L10 = (C/P)^p, where C is dynamic load rating, P is equivalent dynamic load, and p is the life exponent (3 for ball bearings, 10/3 for roller bearings). Why They Matter — Static load rating determines if a bearing can handle peak loads without permanent damage (even if not rotating). Dynamic load rating determines operational life. For high-speed applications, dynamic rating is critical. For low-speed or stationary loads, static rating may be the limiting factor. Always verify both ratings against your application's load profile.