Engineering guides
Reference tables for specifying a custom turned part: the shaft fits, keyseats, threads, surface finishes, grooves and glands we cut to, and the NEMA and ANSI pump frames the catalog is dimensioned from. Every value on these pages is computed from the same data the configurator applies when you build a part, so the reference and the finished part agree.
Computed upper and lower limits for the common shaft fit classes, f7 and g6 through k5, n6, and p6, across the diameters we turn, with guidance on clearance, transition, and interference fits for bearing, seal, and coupling seats. One page per class (16) and one per diameter (26) sit beneath it. Open the fits guide →
Square parallel key and keyseat sizes by shaft diameter: key cross-section, keyseat width, and the cut depth we use, plus end versus captivated keyseats and how the key length is chosen. A calculator finds the key for your shaft, and each key size has its own page. Open the keyseat guide →
UNC and UNF major and minor diameters, threads per inch, and tap-drill sizes, plus Acme power-thread basics, for threaded shaft ends, tapped holes, and studs. One page per size (34) carries the hole-size window by depth and the relief undercut. Open the thread guide →
The roughness each process reaches and the finish targets we hold on bearing seats, seal journals, and bushing surfaces, with how to read an Ra callout against a diameter tolerance. Open the finish guide →
Shaft diameter, extension length and keyseat or flat for all 71 NEMA frames in the catalog, with the MG-1 diameter tolerance each part loads with and the finished size limits it produces. Open the NEMA dimensions guide →
Groove diameter, width, depth and ring thickness by shaft or bore size for the three retaining-ring series the configurator cuts, with the groove tolerances the ANSI rows carry. Open the ring groove guide →
Groove width, gland depth, squeeze, corner radius, clearance and finish for every inch O-ring cross-section, by seal type and backup-ring count, with the cylinder rebuild parts cut to each. Open the gland guide →
The finish and diameter tolerance a rotary lip-seal journal gets, 16 µin Ra at h8 and 32 µin Ra at h11, with computed limits at common seal diameters and the processes that reach each target. Open the seal journal guide →
Identify a replacement pump shaft from its bearings and journals: Goulds 3196 ST through X17, Durco Mark 3 Groups 1 to 3, and the families that interchange with the 3196, with the published dimensions for each. Open the frame group guide →
Specifying the material too? See the per-grade materials guides and the shop capabilities and specs.