# Dodge 023693 P4B-E-408R Four-Bolt Pillow Block Bearing 4-1/2" Bore Set Screw Cast Iron - MROSupply.com ***Dodge 023693 P4B-E-408R four-bolt pillow block bearing with 4-1/2" bore, tapered roller insert, set screw locking, cast iron housing, non-expansion fixed design, Trident triple-lip seal, for heavy-duty industrial applications.*** ## Product details: - Catalog number: 023693 - SKU: 130723 - Price: ***$2,882.88*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [Dodge](https://www.mrosupply.com/brands/dodge/) - Category: - [4-Bolt Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/pillow-block-bearings/4-bolt-pillow-block-bearings/) - [Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/pillow-block-bearings/) - [Mounted Roller Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/) - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/) - [Bearings](htts://www.mrosupply.com/bearings/) - Unit of measure: each - Weight: 84.000 lb - Technicall support: contact supplier for technical support on +1-864-284-5700 ## Product images: - https://static.mrosupply.com/images/noimage.webp ## Product attributes; - Base to center height: 4.7500 in, 120.65 mm - Bearing type: Tapered roller, tapered roller - Bolt Diameter: 0.7500 in - Bolt to bolt max: 13.7500 in, 349.25 mm - Bolt to bolt min: 13.2500 in, 336.55 mm - Bolt width: 2.5000 in, 63.5 mm - Bore length: 6.7500 in, 171.45 mm - Expansion capability: Non-expansion (fixed) - Finish: Black oxide - Greasable: Yes - Housing construction: Solid - Housing material: Cast iron - Housing type: Four-bolt pillow block - I.D.: 4-1/2 in - Insert material: Steel - Locking: Set screw - Lubrication type: Grease - Material: Cast iron - Max RPM: 1360 RPM - Max Speed: 1360 RPM - Rolling element: Tapered roller - Seal: Trident triple-lip - Sensor ready: Yes - Shaft attachment: Setscrew - Shaft diameter: 4.5000 in - Static load capacity: 188400 lbf, 838044.952 N - Take-up frame size: HD-400 ## Product documents / software: - [Dimensions ](https://documents.mrosupply.com/product_documents/02/023690/b5_24.pdf) - [Features and Benefits ](https://documents.mrosupply.com/product_documents/02/023690/b5_2.pdf) - [Nomenclature and Selection ](https://documents.mrosupply.com/product_documents/02/023432/b5_7.pdf) - [2D DXF front](https://documents.mrosupply.com/product_documents/02/023693/baldor2d_023693_front_FDK5c82.dxf) - [2D DXF right](https://documents.mrosupply.com/product_documents/02/023693/baldor2d_023693_right_mDNPMAP.dxf) - [2D DXF top](https://documents.mrosupply.com/product_documents/02/023693/baldor2d_023693_top_RYSuvn9.dxf) - [3D DXF](https://documents.mrosupply.com/product_documents/02/023693/baldor3d_023693_59sG8yq.dxf) - [3D DXF](https://documents.mrosupply.com/product_documents/02/023693/baldor3d_023693_L5yE8rl.dxf) ## Alternate products to `Dodge 023693 P4B-E-408R Four-Bolt Pillow Block Bearing 4-1/2" Bore Set Screw Cast Iron - MROSupply.com`: - [Boston Gear 30223693 F613C-63-B5 helical speed reducer with 63:1 ratio and 56C input flange. This single-stage reducer features a cast iron housing and is designed for general industrial power transmission applications requiring reliable speed reduction.](https://www.mrosupply.com/products/41426/as-markdown/) - [Timken E-P4B-TRB-4 1/2 Type E four-bolt pillow block mounted tapered roller bearing unit with 4-1/2 inch imperial shaft bore and setscrew locking. Heavy-duty cast iron housing designed for conveyor head shafts and industrial process equipment requiring high radial and axial load capacity. Bolt diameter 3/4 in, housing dimensions 13-5/16 to 13-11/16 in.](https://www.mrosupply.com/products/5117125/as-markdown/) - [Boston Gear 30236931 steel shim with 0.003" thickness. Sold as a set of 6 pieces for precision alignment and adjustment in power transmission assemblies. Suitable for use with Boston Gear speed reducers and other industrial equipment requiring accurate shimming.](https://www.mrosupply.com/products/39247/as-markdown/) - [Boston Gear 30236936 55620 XOS-1.375-2.441-0.325-TC-V oil seal with 1-3/8" shaft diameter, 2.4409" outer diameter, and 3/8" width. Features a TC (double lip with spring) design and V (Viton) material for high-temperature and chemical resistance.](https://www.mrosupply.com/products/40363/as-markdown/) - [Boston Gear 30236937 XOS-1.125-2.441-0.375-TC-V55622 16 input oil seal with 1.125" shaft diameter, 2.441" housing bore, and 0.375" width. TC double-lip design with garter spring provides enhanced contamination exclusion for reliable shaft sealing in general industrial applications.](https://www.mrosupply.com/products/6425664/as-markdown/) ## Suggested products: - [Dodge 066372 P4B-SD-311 four-bolt pillow block bearing with 3-11/16" bore, tapered roller insert, clamp collar locking, cast iron housing, non-expansion fixed design, grease lubricated, for heavy-duty industrial applications.](https://www.mrosupply.com/products/130097/as-markdown/) - [Dodge 066373 P4B-SD-312 four-bolt pillow block bearing with 3-3/4" bore, tapered roller insert, clamp collar locking, cast iron housing, non-expansion fixed design for heavy-duty industrial applications.](https://www.mrosupply.com/products/123162/as-markdown/) - [Dodge 037613 P4B522-TAF-400R four-bolt pillow block bearing with 4" bore, setscrew shaft attachment, and tapered roller bearing insert in a cast iron housing. Non-expansion (fixed) design, grease lubricated, and sensor ready for industrial conveyor and heavy machinery applications.](https://www.mrosupply.com/products/125439/as-markdown/) - [Dodge 077279 P4B-EXL-400R heavy-duty four-bolt pillow block bearing with 4" bore, set screw locking, and tapered roller insert. Ductile iron housing with XTS triple lip seal for demanding industrial applications. EXL design accommodates up to 4° misalignment and provides high load capacity in conveyor, aggregate, and material handling systems.](https://www.mrosupply.com/products/1291195/as-markdown/) - [Dodge 223691 16X54 straight face wing pulley with HE45 hub for 4-1/2" shaft bore. Self-cleaning open-wing design prevents material buildup. Heavy-duty steel construction for belt conveyor applications up to 350 PIW rating.](https://www.mrosupply.com/products/785225/as-markdown/) ## Product's reviews: - Best price - Best price on the market with fast shipping. - Dodge conveyor bushings - The right part, in stock, easy to find, quickly shipped. - E20 - This is exactly what I needed. Price was way below my local business that carries couplings. Thanks. - Director - Great costumer care ## FAQ: - 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 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 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 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 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. - 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 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.