HF25 Disc Coupling Mount Type FD disc coupling mount with discpack at input and output, for horizontal mounting. A-Hubs are furnished interference fit, no setscrew, unless specified otherwise. The fluid coupling drops in or out, in conjunction with discpack/adapter assemblies. Availability by Coupling Size & Type Type Description HFN25 HFD25 HFDD25 HFR25 Non Delay Fill Delay Fill Extended Delay Fill Inactive Delay Fill 370 X X 1420 X X X FILLER/FUSIBLE PLUG 392°F (200°C) 1480 X X X 1584 X X X FLUID COUPLING INPUT ADAPTERS OUTPUT ADAPTERS A–HUB A–HUB 1660 X X X 2760 X X X 2870 X X X C K BE BETWEEN SHAFT ENDS C D F H A AA DRIVING END SIZES 1420 & LARGER TYPES HFD & HFDD DRAIN/FUSIBLE PLUG 284°F (140°C) METERING ORIFICE, (3) EQUALLY SPACED SEE PAGE 6 FOR DETAILS Dimensions (in) Cplg Size ➀ No Bore & w/o Fluid (lb) HFD HFR HFDD 370HF 184 1420HF 230 1480HF 337 1584HF 546 1660HF 816 N/A 239 350 568 845 2760HF 1177 1219 2870HF 1685 1758 Weight Allow Speed RPM 1800 1800 BE A C D F H K AA HFD HFR 9.50 2.92 5.30 6.60 7.75 10.04 16.73 15.60 9.50 2.92 5.30 6.60 7.75 11.50 18.70 17.12 1800 11.25 3.43 6.30 7.75 9.50 13.28 21.65 19.50 1800 12.00 3.82 7.10 8.60 10.25 15.24 26.38 22.18 1800 15.00 4.60 8.34 10.40 12.50 17.80 29.92 25.25 1800 16.50 5.30 9.60 11.70 13.75 20.34 34.25 28.88 1500 17.00 5.08 8.38 10.85 13.50 23.60 38.98 31.50 HFDD N/A Shaft Coupling Type FD Size Input Sq. Key HFD HFR HFDD 190FD06A 3.750 1,870 N/A 20.23 190FD06A 3.750 2,850 3,010 Output 650 827 HFD 478 990 HFR HFDD 393 820 N/A 925 22.92 340FD06A 4.375 5,214 5,545 1,864 1,980 1,504 1,950 26.00 625FD06A 5.000 11,200 12,050 3,620 4,955 3,844 5,125 29.58 1080FD06A 5.750 20,815 22,315 7,290 9,225 8,167 9,570 33.72 1700FD06A 7.000 ➃ 38,520 41,321 14,275 16,230 14,660 15,240 37.09 2500FD08A 5.875 Refer to Factory ➀ Fluid couplings are offered for horizontal mounting as shown. Refer to the Factory for other mounting arrangements. Dimensions are for reference only and are subject to change without notice unless certified. ➁ Type FD Disc Couplings are furnished with an average interference fit of 0.0005" per inch of shaft diameter, without setscrew, unless otherwise specified. Maximum bore capacity is reduced when interference fit with a setscrew over the keyway is specified. Refer to publication 427-105 for allowable bores. ➂ Equivalent mass moment values shown apply only to fluid coupling (without bore). Refer to page 29 for fluid WR2 multipliers for other than maximum fill. ➃ Maximum bore is for hub with keyway for rectangular key. 24 (521-110) NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request. Fluid @ Max Fill Cplg Maximum Bore ➁ WR2 (lb-in2) ➂ DRIVEN END
