零件号 5-28-627 焊接叉, 1610系列, 端面直径 3.250", 管径×壁厚 3.500x0.134

Tube vs. Series Check: The 5-28-627 uses a 1610-series U-joint (1.875" cap) in a 3.500" tube -- a combination where the joint capacity is well-matched to the tube's critical speed range. Do not substitute a 1310-series (1.062" cap) or even a 1350-series (1.188" cap) joint -- the cap diameter mismatch will not seat in the 1610 yoke ear bore.

The 5-28-627 brings the 1610 series down to a 3.500" tube at 0.134" wall. The 3.250" butt diameter and 3.000" CL-to-weld are consistent with the 5-28-327 (same values for 4.000" tube), which indicates the 1610-series yoke body geometry is standardized across these two tube sizes within this product family. This Spicer-branded weld yoke is appropriate for medium-duty truck, bus, and commercial van applications where the 1610 joint provides the angular capacity needed but the 1710-series capacity is not required. The 3.500" tube at 0.134" wall provides excellent rigidity for medium-length commercial spans and raises the critical speed beyond what smaller-diameter tubes achieve at the same wall thickness.