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Timken double row tapered roller bearing · TIMKEN A4138D
TIMKEN A4138D tapered roller bearing de doble hilera

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TIMKEN A4138D tapered roller bearing de doble hilera

Manufacturer part numberA4138D
Brand
TIMKEN
Category
Bearings
Series
TDO
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Description

TIMKEN A4138D 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 A4138D and any equivalents.

A TIMKEN TDO bearing is a double row tapered roller assembly in which both rows share a single cone, so it takes radial and axial loads in either direction. Gearboxes, drive shafts and mining machinery are common homes for this design, where rigidity and load capacity matter. MR Industrial Accessories LLC supplies this line to customers throughout the United States and in several Latin American countries.

You can read the TDO code straight off the assembly number. The series number is followed by the letter D, the marker for double row, and the same number covers the cone and cup that form the unit. The simplest way to get the correct bearing is to copy the full part number from the equipment or its nameplate and send it to us; we then quote that reference or a compatible equivalent.

Typical service is heavy: speed reducers, conveyor roller shafts, mills, presses and road equipment. Cement, oilseed, steel and mining plants rely on this construction because the paired rows handle combined loads and moments, which suits arrangements that need stiffness and accurate shaft alignment.

Lubrication can be grease or oil, depending on where the bearing works. At mounting, verify axial clearance and housing alignment, since misalignment cuts service life. In dusty or wet locations, sealing deserves attention: fit appropriate radial shaft seals and keep the work area clean during installation.

Interchange between manufacturers follows the series number and the dimensions. If the exact part number is not at hand, send what you have and we will help pin down the replacement that fits your application. We can also answer questions on mounting and lubrication.

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 D suffix mean in the TDO series?
The D shows the bearing is double row: two rows of tapered rollers on one common cone. That lets it carry radial and axial loads in both directions, which a single row bearing cannot do.
How do I request a quote for a TIMKEN TDO bearing?
Send the complete part number from the bearing or the equipment manual by WhatsApp or email. We reply promptly with a quote for that reference or a compatible alternative.
What should I keep in mind for mounting?
Check housing alignment and axial clearance, and use the right lubricant. In dusty or humid conditions, effective seals matter. A clean, aligned installation helps the bearing last.
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