9U9558 Spherical Bearing for Caterpillar Equipment

The 9U9558 spherical bearing is a suspension support component used on Caterpillar off-highway dump trucks. It is installed in the rear suspension area of the vehicle and is intended for use with the Caterpillar equipment models listed below.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The equipment brand associated with the fitment is Caterpillar; Caterpillar is identified here as the manufacturer of the compatible dump truck models, not as the manufacturer of this bearing.

The part is identified as a spherical bearing under Caterpillar part number 9U9558. The same number may also be written with a hyphen as 9U-9558. Both number formats refer to the bearing designation provided for this component.

Fitment

The 9U9558 spherical bearing is used on the following Caterpillar off-highway dump truck models:

• Caterpillar 784B
• Caterpillar 784C
• Caterpillar 785
• Caterpillar 785B
• Caterpillar 785C
• Caterpillar 785D
• Caterpillar 785G

Fitment is specified for the rear suspension support application on the listed Caterpillar dump truck models. The model designation should be checked against the machine identification and the part number removed from the machine before installation, particularly where several versions of the same truck series are in operation.

The available application data covers the models stated above. No additional Caterpillar machine models are included here without confirmed fitment information. The bearing should therefore be matched by both the truck model and the applicable part number.

Cross-reference numbers

• 9U9558 — Caterpillar part number format without a hyphen
• 9U-9558 — Caterpillar part number format with a hyphen

These two number formats are cross-references for the same spherical bearing designation. No other supplier numbers or additional equipment-manufacturer numbers are included because they are not confirmed in the available product data.

Specifications

The dimensional information applies to the spherical bearing identified by SKU 9U9558. The inner diameter is 4.501 inches, the outside diameter is 7.374 inches, and the stated length of the inner bearing is 4.685 inches. These dimensions describe the bearing supplied under the 9U9558 designation and should be compared with the removed component when verifying compatibility.