20 ©2026 Johnstone Supply, LLC DIRECT DRIVE MOTORS 48 Frame Permanent Split Capacitor 3-Speed and 4-Speed Direct Drive Blower Motors PSC, 48 Frame, Open Air Over Applications: • Ideal replacements for blowers in direct drive furnaces, air conditioners and exhaust fans Features: • Automatic thermal protection • Extended tie rods shaft end • Mounting hubs both ends • Capacitor not included Order # Mfg. # Diam. HP Volts RPM Speeds F/L Amps Efficiency Shaft Diam. Shaft Length Rot. “A” Dim. “R” Dim. Bearing Type Wt. Lbs. Capacitor To Match Each S88-902 D721 5-5/8" 1/4-1/6 115 1075 3 4.80 65% 1/2" 6" Rev. 4" 4-9/16" Slv 15.0 G21-930 329.00 S88-906 D725 5-5/8" 1/4-1/8 208-230 1075 3 2.20 65% 1/2" 6" Rev. 4" 4-9/16" Slv 15.0 G21-930 359.00 S88-903 D727 5-5/8" 1/3-1/5 115 1075 3 5.90 65% 1/2" 6" Rev. 4-1/2" 4-13/16" Slv 14.0 G21-930 299.00 S88-907 D923 5-5/8" 1/3-1/5 208-230 1075 3 2.90 65% 1/2" 6" Rev. 4-1/4" 4-13/16" Slv 13.0 G21-930 369.00 S88-904 D701 5-5/8" 1/2-1/5 115 1075 4 7.70 65% 1/2" 5-1/2" Rev. 5-1/4" 5-13/16" Slv 18.0 G21-891 375.00 S88-908 D703 5-5/8" 1/2-1/4 208-230 1075 3 4.20 65% 1/2" 6" Rev. 5" 5-9/16" Slv 18.0 G21-933 425.00 S88-905 D728 5-5/8" 3/4-1/3 115 1075 3 10.50 65% 1/2" 6" Rev. 5-1/2" 6-1/16" Slv 20.0 G21-891 495.00 S88-909 D729 5-5/8" 3/4-1/3 208-230 1075 3 5.40 65% 1/2" 6" Rev. 5-1/2" 6-1/16" Slv 21.0 G21-891 495.00 3-Speed Direct Drive Blower Motors PSC, 48 Frame, Open Air Over Applications: • Designed as replacements for direct drive furnace blower motors, air conditioners, exhaust fans and other applications Features: • Automatic thermal protection • Reversible rotation • Horizontal mount • 2-1/4" resilient rings • 26" long leads with 1/4" straight terminals • 1/2" x 4" long flatted shaft with flat 3-1/2" long • 3/4" long studs on 5.12" bolt circle, #10-32 thread on shaft end Order # Mfg. # Diam. HP Volts RPM Speeds F/L Amps Efficiency Shaft Diam. Shaft Length Rot. “A” Dim. “R” Dim. Bearing Type Wt. Lbs. Capacitor To Match Each S88-524 048A17O152 5-5/8" 1/4 115 1625 3 2.90 — 1/2" 4" Rev. 4-1/2" 4-13/16" Ball 12.0 G21-933 475.00 S87-976 048A11O1798 5-5/8" 1/4 115 1075 3 3.40 55% 1/2" 4" Rev. 4-1/4" 4-9/16" Ball 12.0 G21-933 369.00 S88-526 048A17O151 5-5/8" 1/3 115 1625 3 4.00 — 1/2" 4" Rev. 4-3/4" 5-1/16" Ball 14.0 G21-933 485.00 S87-978 048A11O1769 5-5/8" 1/3 115 1075 3 4.60 57% 1/2" 4" Rev. 4-3/4" 5-13/16" Ball 14.0 G21-933 355.00 S87-979 048A11O2042 5-5/8" 1/3 208-230 1075 3 3.30 — 1/2" 4" Rev. 4-3/4" 5-1/16" Ball 14.0 G21-930 415.00 S88-527 048A17O153 5-5/8" 1/2 115 1625 3 5.00 — 1/2" 4" Rev. 5-1/4" 5-9/16" Ball 16.0 G21-897 535.00 S87-980 048A11O1755 5-5/8" 1/2 115 1075 3 6.20 — 1/2" 4" Rev. 5-1/4" 5-9/16" Ball 17.0 G21-891 389.00 S88-528 048A17O155 5-5/8" 1/2 208-230 1625 3 4.10 — 1/2" 4" Rev. 5-1/4" 5-9/16" Ball 16.0 G21-930 565.00 S87-981 048A11O1756 5-5/8" 1/2 208-230 1075 3 2.65 74% 1/2" 4" Rev. 5-1/4" 5-9/16" Ball 17.0 G21-933 425.00 S88-250 048A11O787 5-5/8" 3/4 115 1075 3 10.20 — 1/2" 4" Rev. 5-3/4" 6-1/16" Slv 20.0 G21-897 515.00 S88-251 048A11O2046 5-5/8" 3/4 208-230 1075 3 5.60 — 1/2" 4" Rev. 5-1/2" 5-13/16" Ball 19.0 G21-891 529.00 WE’RE THE EXPERTS YOU COUNT ON. BETTER SERVICE & LOCAL SUPPORT WITH GLOBAL PARTNERS • Products you need, including hard to find speciality parts • Delivery options to get back on the road • Technology to make your job easier • Training to keep you competitive • Service and support
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