A133900 Taper Roller Bearing for Doosan B15/18S5 Forklift

Overview

The A133900 TAPER ROLLER BEARING is a replacement component for several popular Doosan forklift series, including the B15/18S5, BC15/18S5, BC20SC5, D15/18S2 and D20SC-2. Taper roller bearings are engineered to carry combined radial and axial loads, which makes them a critical fitment in wheel hubs, steer axles and drive assemblies where load direction changes constantly. When a bearing of this type begins to wear, the first signs are often play in the wheel, a rumbling or growling noise, or heavier steering. Fitting a new A133900 bearing restores smooth, controlled rotation and helps protect adjacent components from secondary damage.

Compatibility

The A133900 fits the following Doosan truck series:

• S5-generation B and BC series: B15/18S5 (SB1086) and BC15/18S5, BC20SC5 (SB1087)
• S2-generation D series: D15/18S2 and D20SC-2 (SB1024)

If you are searching for an “A133900 for B15/18S5” or a matching bearing for any of the models above, always confirm fitment by part number rather than model code alone. No alternative OEM cross-reference numbers are published for this item, so A133900 is the definitive reference to quote when ordering.

Quality and Reliability

Taper roller bearings operate under constant stress, so build quality directly affects service life. This A133900 bearing is produced to match the original Doosan specification, with hardened, precision-ground raceways and rollers that distribute load evenly across the contact area. The one-piece cage keeps the rollers correctly spaced, reducing friction and heat build-up during heavy use. Choosing a bearing made to specification for your Doosan truck, rather than an approximation, helps maintain the handling and load stability the machine was designed for.

Installation and Maintenance Tips

• Inspect the shaft and housing for scoring, corrosion or wear before fitting; a new bearing will fail quickly if mounted on damaged surfaces.
• Press the bearing on by its inner or outer race as appropriate – never drive it into place with a hammer.
• Set end play or preload to the figures stated in your truck’s service manual; incorrect adjustment is the most common cause of early failure.
• Keep the working area and tools clean, as contamination is a leading cause of premature bearing wear.
• During routine service checks, listen for rumbling and check for wheel play so worn bearings are replaced before they damage related parts.

We recommend that installation be carried out by a qualified forklift technician.

Why Order from Us

At forkliftpartssearch.com we specialise in replacement parts for Doosan and other leading forklift brands. Every order is checked against the part number you provide, so you can order the A133900 with confidence that it matches the models listed above. Our team has extensive experience with Doosan B, BC and D series trucks and is happy to help you confirm fitment before you buy. Order the A133900 TAPER ROLLER BEARING today and keep your trucks rolling smoothly.