TIMKEN HH221449NA tapered roller bearing de doble hilera
- Brand
- TIMKEN
- Category
- Bearings
- Subcategory
- Tapered roller bearings
- Series
- TNA
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Description
TIMKEN HH221449NA belongs to tapered roller bearing de doble hilera, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for HH221449NA and any equivalents.
Two rows of tapered rollers sharing one shaft is the basic layout of the TIMKEN TNA series bearing. Radial and axial forces arriving from either direction are handled by the same unit, which is why gearboxes, final drives and other heavy transmission assemblies rely on this design when stiffness and load capacity matter. MR Industrial Accessories LLC supplies the line to plants and workshops in the United States and Latin America.
Reading a TNA part number is the first step in any replacement job. Take HH221449NA: the leading characters point to the assembly type and the dimension series, and the NA ending marks a construction variant inside the family. What ties the series together is a machined cone and cup that mount directly, with no separate adapter needed. Bore diameter, outside diameter and total width are the three figures to confirm before ordering.
Double row tapered bearings turn up in mining, cement, steel and bulk material handling, as well as in speed reducers, mills, conveyor drives and large farm equipment. Where a single row cannot carry the combined loads and moments on a shaft, this arrangement is the usual answer.
Fit and lubrication decide how long the bearing lasts. Shaft seats normally take an interference fit and housings a sliding fit, selected according to the load case. Grease or oil both work, and the seal has to keep contaminants out. Shaft-to-housing alignment deserves attention, since misalignment beyond the limit cuts service life.
Interchange with other brands is possible when the main dimensions and the load capacity line up. A similar part number is not enough on its own; tolerances, contact angles and mounting style also have to be checked. Send the part number or the dimensions through WhatsApp or email and the MR team will suggest an equivalent and help with the selection.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does the TNA series indicate in a TIMKEN bearing?
- It identifies a double row tapered roller bearing. The characters in the part number give the size and the construction variant. Send a specific part number on WhatsApp and we will help you read it.
- How can I tell whether a TNA bearing fits my equipment?
- Compare bore, outside diameter and width, plus load capacity and mounting style. A similar part number by itself is not sufficient. Share the original dimensions and we will point you to the equivalent.
- Which lubricant suits a double row bearing?
- Grease or oil, depending on how the equipment is designed and the conditions it runs in. Quantity and type should follow the equipment manufacturer's recommendation. If you are unsure, ask us on WhatsApp.