23 Series NCM Double end mount / Spring return NCME_-_S Front nose mount / Spring return NCMB_-_S Rear pivot mount / Spring return NCMC_-_S Bore size (inch) 075 (3/4") 088 (7/8") 106 (1-1/16") 125 (1-1/4") 150 (1-1/2") MM 0.250 0.250 0.312 0.437 0.437 A 0.50 0.50 0.50 0.75 0.75 E 0.86 0.93 1.12 1.32 1.56 F 0.38 0.38 0.38 0.50 0.62 G 0.251 0.251 0.251 0.251 . GA 0.250 0.250 0.250 0.250 0.375 GB 0.75 0.75 0.75 0.75 1.00 K . . 0.12 0.25 0.25 L 0.34 0.34 0.34 0.41 0.50 NC 0.62 0.75 0.88 1.06 1.25 NE 0.12 0.18 0.24 0.25 0.25 NN 1/2-20 5/8-18 5/8-18 3/4-16 3/4-16 W 0.44 0.50 0.62 0.88 0.88 YC 0.62 0.62 0.62 0.78 0.78 ZC 1.69 1.56 1.56 1.81 1.69 FF 5/8-18 5/8-18 5/8-18 3/4-16 3/4-16 D . . 0.25 0.38 0.38 B 0.496 0.624 0.624 0.749 0.749 KK 1/4-28 1/4-28 5/16-24 7/16-20 7/16-20 0 .0.003 0 .0.003 0 .0.003 0 .0.003 0 .0.003 (inch) Bore size (inch) 075 (3/4") 088 (7/8") 106 (1-1/16") 125 (1-1/4") 150 (1-1/2") No bumper 2.28 2.35 2.66 3.25 3.12 With bumper 2.41 2.47 2.79 3.38 3.25 Note) LB dimension for NCME150 not applicable. Note 1) F dimension for NCME150 not applicable. There are no flats on the E type 150 bore rear tang. Note 2) FF dimension for NCMC 150 is not applicable. There are no threads on the C type 150 bore rear tang. LB No bumper 1.50 1.72 2.06 2.53 2.44 With bumper 1.63 1.84 2.19 2.66 2.57 ZB1 No bumper 2.56 2.63 2.94 3.66 3.50 With bumper 2.69 2.75 3.07 3.78 3.63 ZB2 Bore size (inch) 075 (3/4") 088 (7/8") 106 (1-1/16") 125 (1-1/4") 150 (1-1/2") No bumper 2.41 2.47 2.79 3.38 3.25 With bumper 2.53 2.59 2.91 3.50 3.38 LB No bumper 1.63 1.84 2.19 2.66 2.56 With bumper 1.75 1.97 2.32 2.78 2.68 ZB1 No bumper 2.69 2.75 3.06 3.79 3.63 With bumper 2.81 2.88 3.19 3.91 3.75 ZB2 Bore size (inch) 075 (3/4") 088 (7/8") 106 (1-1/16") 125 (1-1/4") 150 (1-1/2") oG 0.251 0.251 0.251 0.251 0.378 Bore size (inch) 075 (3/4") 088 (7/8") 106 (1-1/16") 125 (1-1/4") 150 (1-1/2") No bumper 2.41 2.47 2.79 3.38 . With bumper 2.53 2.59 2.91 3.50 . LB No bumper 2.69 2.75 3.06 3.79 3.38 With bumper 2.81 2.88 3.19 3.91 3.50 ZB2 ZB1 + ZC Per 1" of Stroke KK-UNF-2A D-Across Flats NN-Mounting Nut (included) 0.09 W NE 1/8 NPT NC K A oMM oB Pilot oE Dimensions: Single Acting, Spring Return ZB + Stroke LB + Stroke oG FF-UNF-2A Y W A ZC oMM KK-UNF-2A D-Across Flats NN-UNF-2A oB Pilot N YC oGA Pin oE GB F L ZD ZD ZC K 0.50 YC ZB + Stroke LB + Stroke oG Pivot Pin Hole oE NN-Mounting Nut (incl. except 2" bore) NCME 150 ZD ZC L F YC L oB Pilot oB Pilot NN-Mounting Nut (incl. except 2" bore) D-Across Flats KK-UNF-2A oMM ZC 0.50 A K W Y ZD N Single Acting, Spring Return (B/C/E) Mount without Magnet X155US (without clevis pin) Single Acting, Spring Return (B/C) Mount with Magnet Single Acting, Spring Return (E) Mount with Magnet