Our 6904 open bore adapter is used to press 37x20 sealed bearings. The adapter is machined with one step at 20mm OD, which fits into the center of the sealed bearing.

• Installs: 6904 bearing
• Inner Step Outer Diameter: 19.9mm
• Outer Diameter: 36.8mm
• Thickness: 8mm
• 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)