Our 6903 open bore adapter is used to press 30x17 sealed bearings. The adapter is machined with one step at 17mm OD, which fits into the center of the sealed bearing.

• Installs: 6903 bearing
• Inner Step Outer Diameter: 16.9mm
• Outer Diameter: 29.8mm
• Thickness: 7mm
• Thru Hole Diameter: 0.387" (9.8mm)
• Inner hole sized to fit 3/8" ACME threaded rod
• Compatible with PRESS-1 or PRESS-4 handles
• Machined, red anodized aluminum
• Sold individually (2 drifts required for some installations)