DAYTON 5K657A General-Purpose AC Motor, Single-Phase 1/2 HP, 115/208-230V, 3450 RPM, 56C Face/Foot (C-Face), ODP, Ball Bearings, SF 1.65, Auto-Reset Thermal, 5/8″ × 1-7/8″ Shaft (flat) — KS55CXNZ-1029

DAYTON 5K657A General-Purpose AC Motor, Single-Phase 1/2 HP, 115/208-230V, 3450 RPM, 56C Face/Foot (C-Face), ODP, Ball Bearings, SF 1.65, Auto-Reset Thermal, 5/8″ × 1-7/8″ Shaft (flat) — KS55CXNZ-1029 Condition: New – other. Never installed/used. Back endbell/cover shows superficial rust spotting (puddle trace); see photos. Includes original motor only (no cord, pulley, or mounting bolts). Overview The DAYTON 5K657A is a compact, general-purpose single-phase AC motor built for belt or direct-coupled light industrial service. With 1/2 HP, 3450 RPM (two-pole), 115/208-230 VAC dual-voltage windings, and a stout Service Factor 1.65, it offers extra headroom for short overloads and tougher starts. The 56C C-face with base (face-mount pilot foot) makes it a flexible drop-in on pumps, fans, small machinery, and conveyors. Ball bearings, automatic thermal overload, and continuous (CONT) duty round out a durable package for shop and OEM use. Features 1/2 HP, 3450 RPM (60 Hz) single-phase general-purpose motor Dual voltage 115/208-230 VAC, field-reconnectable High Service Factor: 1.65 for added thermal/mechanical margin 56C frame with C-face foot for direct-couple or base mount flexibility Ball bearings for longer life vs. sleeve designs Auto-reset thermal overload protection Open Dripproof (ODP) ventilation (verify on your nameplate/photos) All-angle mount capability; continuous duty to 40 °C ambient Reversible rotation (CW/CCW), wire per diagram in terminal box Rolled-steel frame; compact 5-5/8″ body diameter Specifications (as provided) Brand / MPN / Model: DAYTON 5K657 / 5K657A Alt. ID: KS55CXNZ-1029 Phase / Frequency: 1-phase, 60 Hz Horsepower: 1/2 HP Voltage: 115/208-230 VAC (dual-voltage) Full-Load Amps (FLA): 6.0/4.0 A (nameplate) SFA: 10.0/5.0 A (service-factor amps) Nameplate RPM: 3450 Frame / Mount: 56C (C-face) with base; all-angle mounting Enclosure: ODP (open dripproof) Insulation Class: A Service Factor: 1.65 Thermal Protection: Automatic (auto-reset) Duty/Time rating: CONT (continuous) Design / Code: Code M Bearings: Ball Shaft: 5/8″ dia × 1-7/8″ L, flat Dimensions: Overall L 9-15/16″, less shaft 8-7/16″, body Ø 5-5/8″ Listings: UL Component (E47479), CSA (No. LR2459) Max Ambient: 40 °C Rotation notation: use CCWSE/CWLE convention when documenting. Wire per diagram to obtain required direction. Applications / Spheres of Application Pumps (C-face): small centrifugal/transfer pumps with 56C face mounts Fans/Blowers (belt or direct): shop blowers, cabinet fans (ODP location only) Machine tools / small conveyors: lathes, polishers, drill presses, feed drives Compressors / agitators within HP/RPM envelope and ODP-suitable environments OEM equipment needing compact 56C mounting and high SF margin Cross-Referenced / Identification Numbers DAYTON: 5K657, 5K657A Alt/Builder code: KS55CXNZ-1029 UL File: E47479; CSA LR2459 MFG No.: A75 7; Code M Comparable Motors (verify frame/shaft/voltage before substituting) NBK Parts 56C 1/2 HP, 3450 RPM, 115/208-230V, ODP, ball bearing, reversible — match 5/8″ × 1-7/8″ shaft and SF ≥1.5 Baldor/ABB EM3615 series (56C, 1/2 HP, 3450, ODP/TEFC variants) Leeson 110088/110089 (56C, 1/2 HP, 3450, single-phase) Marathon C-Face GP 56C 1/2 HP 2-pole ODP U.S. Motors / Nidec 56C 1/2 HP 3450 RPM ODP (2-pole) WEG 00118ES1B56C (select 1/2 HP option; verify enclosure and voltage) What This Motor Can Be Part Of Direct-coupled pump packages using 56C pilot and bolt pattern Belted blower skids (use adjustable base and guard; set sheaves for target RPM/CFM) Compact machinery drives: mixers, grinders, sanders (with proper guarding) Fan cabinets where ODP cooling air is clean/dry and ambient ≤ 40 °C Included DAYTON 5K657A motor, back cover, round insert and shaft key (also called a key, parallel/square key, or keystock) seen in the pictures Not Included Cord, plug, base bolts, shaft key, pulley/coupling, or mounting hardware Related dayton 5k657a general purpose motor; device to drive pumps, fans, small machinery; 1/2 hp 3450 rpm single-phase motor; 56c c-face footed motor; open dripproof ball-bearing motor; reversible hvac/r drive motor; dual voltage 115/208-230v ac motor; high service factor 1.65 motor; ks55cxnz-1029 equivalent; nbk parts 56c 1/2 hp motor Common Requests: “Is this the 56C face model with a 5/8″ shaft?” “Can I wire it for 115V or 230V and how do I reverse rotation?” “Is ODP acceptable in my location, or do I need TEFC?” “What size pulley can I run at this SF 1.65 and amperage?” “Will it bolt up to my C-face pump without an adapter?” Trademarks: DAYTON® and other manufacturer names are the property of their respective owners. They are used here solely to identify compatibility and specifications.   P122