Koyo/JTEKT 30305DJR Tapered Roller Bearing (Steep) 25x62x18.25mm

Koyo/JTEKT 30305DJR. Combined load: handles radial and axial in one bearing. 30300 series matches OEM tapered roller specs. Open type, grease as commissioned. Tapered Roller Bearing Metric (Steep) - 30300 Series is the bearing for wheel hubs, gearbox output shafts and any duty with combined radial and axial loading.

Product Specifications. Bearing type: Tapered roller bearing. Series: 30300. Load type: Combined radial + axial. Construction: Separable. Sealing: Open.

Key Specifications

Available Sizes

15 sizes available — select the exact size you need from the dropdown above. Key figures for each:

Where This Is Used

• Automotive: Front and rear wheels, transmissions, differential pinion.
• Off-Highway Vehicles: Railroad, Construction, and Agricultural equipment.
• Industrial: Rolling mill equipment, gear boxes, and machine tool spindles.

Features

• Features of Spherical Roller Bearings.
• The inner ring assembly of a tapered roller is referred to as the cone, while the outer ring is called the cup.
• Tapered rollers are guided by the cone back face rib.
• This bearing design is suitable for heavy radial loading and a sizeable amount of axial loading.
• The taper of the rollers and the cone raceways have a common apex on the bearing axis.
• The angle between the cup raceway and the bearing axis is the contact angle.
• The larger the contact angle the greater the bearings axial load capacity.
• The cone and cup are separable simplifying bearing mounting.
• Single row bearings can accommodate radial load and axial load in one direction.
• Two single row bearings are used opposing each other to simplify setting of the proper clearance between the two rows.
• The two row design can handle radial load and an axial load in either direction.
• The two row design is available as a TDO (double outer race), or a TDI (double inner race).
• Two row taper designs are normally supplied with spacers to provide a pre-adjusted assembly.
• The four row design is commonly used on rolling mill roll necks for their large load carrying capacity.
• Cages used can be a pressed steel or a pin type.
• Cage types can be pressed steel, machined copper alloy.