From the Voron V2.4 build we have found, that 61mm design for rotary shaft on Z-axis works better (matches the surface of both flanged bearings at the ends)

Specification:
· Manufacturer: Misumi
· Model: SFR5-61-G61-FC0
· Material: Steel (EN 1.1191)
· Diameter (D): 5mm
· Tolerance (D): g6
· Length (L): 61mm
· D-cut (L): Full length (61mm)
· Surface treatment: Browning