Distributor Bearing Wholesalers Incspecializes as seller an Timken 388A / 384XD to companies throughout the USA, Canada, Mexico and parts of Europe. The headquarters is located in Singapore where a 10,000 square foot facility includes offices and warehousing space.
Here at Distributor Bearing Wholesalers Inc, our team is proud to supply BB, large distributors and smaller companies and individuals with a huge selection of Timken 388A / 384XD that are unparalleled in the industry. We offer a size range from 0.8 mm to 5 inch, in nearly every material and grade required per customer specifications. So, if you need a reliable source for precision and non-precision balls and rollers any of the following materials we are your people!
What good is the BEST product without the BEST quality of care?
You’re in good hands with the Distributor Bearing Wholesalers Inc. We want to ensure you receive the utmost in quality products, with impeccable customer service that you will not receive anywhere else. This philosophy is what sets us apart from our competitors.
ervices & Solutions from Distributor Bearing Wholesalers Inc range from new machine development and design verification, to reconditioning, Integrated Maintenance Solutions, training and remote monitoring.
We can help you reduce your operation’s energy usage and improve its sustainability. And we will work with you to define where to focus, and how to get the fastest return on your investment.
Tapered Roller Bearings Tapered Roller Bearings - TDO (Tapered Double Outer) Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial Timken Part Number 388A - 384XDTimken Part Number 388A - 384XD, Tapered Roller Bearings - TDO (Tapered Double Outer) ImperialThe configuration of the TDO provides a wide effective bearing spread, making it ideal for applications in which overturning moments are a significant load component. TDO bearings can be used in fixed positions or allowed to float in the housing bore. Specifications | Dimensions | Abutment and Fillet Dimensions | Basic Load Ratings | Factors
| Series || 385 |
| Cone Part Number || 388A |
| Cup Part Number || 384XD |
| Design Units || Imperial |
| Bearing Weight || 5.51 lb2.499 Kg |
| Cage Type || Stamped Steel |
| Ab - Cage-Cone Frontface Clearance || 0.11 in2.8 mm |
| d - Bore || 2.2650 in57.531 mm |
| D - Cup Outer Diameter || 3.9370 in100.000 mm |
| B - Cone Width || 0.8640 in21.946 mm |
| C - Double Cup Width || 3.7640 in95.606 mm |
| T - Bearing Width across Cones || 4.1389 in105.128 mm |
Abutment and Fillet Dimensions
| R - Cone Backface "To Clear" Radius1 || 0.14 in3.600 mm |
| r - Cup Frontface "To Clear" Radius2 || 0.03 in0.8 mm |
| db - Cone Backface Backing Diameter || 2.76 in70.10 mm |
| Da - Cup Frontface Backing Diameter || 3.74 in95.00 mm |
| Aa - Cage-Cone Backface Clearance || 0.03 in0.8 mm |
Basic Load Ratings
| C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 || 6280 lbf28000 N |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 || 42200 lbf188000 N |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 || 10900 lbf48700 N |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 || 3810 lbf16900 N |
| K - Factor7 || 1.65 |
| e - ISO Factor8 || 0.75 |
| Y1 - ISO Factor9 || 0.90 1.34 |
| Y2 - ISO Factor10 || 1.34 |
| G1 - Heat Generation Factor (Roller-Raceway)11 || 42 |
| G2 - Heat Generation Factor (Rib-Roller End) || 15.7 |
| Cg - Geometry Factor12 || 0.0859 |
Distributor Bearing Wholesalers Inc supports farmers and equipment manufacturers in their efforts to feed the world, providing products and services designed to deliver high performance, extend equipment life and enhance productivity.
Precision tolerances – meet ABEC 5F (ISO P5) or ABEC 7F (ISO P4) for high running accuracy.
Material selection – standard offerings include 440C stainless steel and 52100 chrome steel.
Superfinished raceways – provide a smooth surface finish to reduce internal friction and vibration.
High quality ball complement – grade 5 or better balls optimize smooth rolling performance.
Retainers – various configurations and materials to meet performance needs.
Self-contained, pre-assembled and pre-lubricated
Reduces maintenance costs, increases miles per bearing and fuel efficiency
If you know heavy mining equipment, you already know Timken 388A / 384XD We’ve been a top OEM supplier to the industry for five
decades running. And along the way, our Timken 388A / 384XD- and BB products have become the global standard for custom-designed bearings in mining trucks and excavators. Distributor Bearing Wholesalers Inc’s newest innovations build on this legacy by taking performance to new heights—delivering the quietest, coolest and highest-capacity bearings in the market. Timken 388A / 384XD engineers never stop pushing the boundaries of performance. Case in point: Our new-generation Timken Bearings series—addressing end users’ needs for maximum possible output and durability in the most severe applications. These large-bore taper, cylindrical and spherical bearings are built to withstand the environmental risks that heavy-duty surface mining equipment demands. Delivering the ultimate in performance, Timken 388A / 384XD combines special alloys capable of 200°C continuous ambient temperatures with an optimized roller complement and retainer design—enabling the highest load capacity and allowable speed for a given bearing type and size.
You’ll find Distributor Bearing Wholesalers Inc-engineered bearings inside everything from giant haulers to draglines, electricrope shovels to drills, pulverizers, conveyors and beyond. That’s because our OEM partnerscan count on us to engineer more long-lasting reliability and durability into their criticalsurface mining equipment—so that you can achieve greater throughput, less unplanneddowntime and easier preventative maintenance.
Distributor Bearing Wholesalers Inc began making air-melted alloy steel to serve the bearing industry’s need for high-quality steel. Now, we place Timken 388A / 384XD in applications throughout industrial markets worldwide. We are ready to engineer a solution for you. We offer more than 450 grades of steel and supply the broadest range of special bar quality (SBQ) product , including rolled and forged-rolled bar and seamless mechanical tubing. We sell our custom-steel solutions to original equipment manufacturers producing components for industrial applications in agriculture, construction, machinery, military, mining, power generation,
Timken Steel produces carbon steel, alloy and micro-alloy steel in the form of specialty bar, seamless mechanical tubing, value-add components, billets and bottom-poured ingots. Timken 388A / 384XD, combined with our expert knowledge of metallurgy, allow us to tailor every order to customers’ specifications.
We have ideal solutions in special bar quality (SBQ) bearings sizes from 1” to 16” and seamless mechanical bearings sizes from less than 3” to over 13”. We engineer hundreds of carbon and alloy steel grades to meet the severe service requirements in oil and gas.
In the last decade we have invested heavily in Timken 388A / 384XD to serve the oil and gas market quickly and effectively. Our newest addition – the Advanced Quench and Temper Facility (AQTF) - provides an additional 40,000 tons per year of capacity. Specially designed outer diameter (OD) and inner diameter (ID) water quench ensures we are able to meet stringent mechanical properties.