Frameless Kit Motors - Grp6.com

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How to Order K700150-7Y K T = 0.78 Nm / amp (110.35 oz-in / amp) R T-T = 0.84 Ω I cont = 18 amp K E = 0.78 v / rad / sec (81.71 V / kRPM) L T-T = 5.79 mH I peak = 28 amp E BUS = 300 Vdc K254150-5Y K T = 1.42 Nm / amp (199.7 oz-in / amp) R T-T = 0.78 Ω I cont = 34 amp K E = 1.42 v / rad / sec (147.6 V / kRPM) L T-T = 3.6 mH I peak = 54 amp E BUS = 300 Vdc 5 5 4 4 3 3 Speed (kRPM) 2 1 continuous intermittent Speed (kRPM) 2 1 continuous intermittent 0 0 6 12 18 24 30 36 42 (Nm) 0 0 12 24 36 48 60 72 84 (Nm) 0 500 10k 15k 20k 25k 30k 35k 40k 45k 50k 55k ( i ) Torque 0 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k 11k 12k (oz in) Torque MOUNTING FRAMELESS MOTOR INTO ASSEMBLY This section outlines a number of methods that can be used to mount the stator and rotor assemblies in the product. Which method to be used will largely depend on the product design, performance requirements (torque, velocity, temperature, etc.) and the manufacturing capabilities of the user. Dimensioned drawings for all the kits are shown in the catalog pages. STATOR The stator will be typically be mounted into a cylindrically shaped hole in the product (see Figure 9). It is recommended that a banking step be incorporated at the bottom of the hole to assure accurate and repeatable location of the stator. Alternately, a non-ferrous "plug" could be used to provide a banking surface, which can be removed once the stator is fixed in place. Figure 9 shows two methods for holding the stator in position; either with adhesive for a permanent assembly or with set screws for a removable assembly. In designing the housing, be sure to provide a means for the stator lead wires (three) and the commutation Hall sensor PCB wires (five) to extend outside of the housing without interfering with the rotor / shaft assembly. For volume production, a jig should be fabricated that will assure that the stator is located in the same position for each assembly. The yellow dot on the stator provides an index point for accomplishing this. This will eliminate the need to perform mechanical commutation alignment at final assembly. Rotor Except for the smaller motors (K032 and K044), the ID of the rotor will usually be larger than the shaft diameter. An adapter sleeve will be required to allow mounting of the rotor to the shaft (see Figure 9). The rotor / sleeve assembly must be positioned on the shaft such that the magnets are located in line with the stator assembly laminations. If the version in which the commutation PCB assembly is bonded to the end turns is being used, the commutation magnets must be located in proper proximity to the Hall sensors on the PCB. Figure 9 shows two methods for holding the rotor / sleeve on the shaft, either with adhesive or by using a spring pin and retaining ring. When using the adhesive method, a shoulder should be provided on the shaft to properly locate the rotor/sleeve assembly. When using the spring pin/retaining ring method, a slot must be provided in the sleeve that will engage the spring pin in the shaft, thus properly locating the rotor / sleeve assembly. During assembly, be sure that the pin and slot are fully engaged. Note: The following adhesives are recommended for rotor and stator assembly (see Figure 9) Assembly Loctite #325 Activator $7074 Loctite #609 Stator Assembly: Assemble stator in housing or sleeve (aluminum recommended) with the following locational clearances: • Diameter to 127mm (5in) 0.025mm (0.001in) to 0.127mm (0.005in) diametrical clearance. • Diameter over 127mm (5in) 0.05mm (0.002in) to 0.254mm (0.010in) diametrical clearance. Do not force stator in position. This may damage or deform stator. Permanent Assembly: Secure stator with adhesive, Loctite #325 with activator #7074 or equivalent Removable Assembly: Secure with cup point screws or setscrews thru housing into stator steel laminations only. Use a minimum of three (3) screws equally spaced about stator O.D. Tighten evenly. Do not over torque screws. This may damage or deform stator. 153
<strong>Frameless</strong> Motor Series Rotor Retaining Ring Slot Adapter Sleeve Adapter Sleeve Commutation Wires (3) Commutation PCB Assy Set Screws Spring Pin Groove Shaft Stator Wires (3) Stator Shaft Shoulder Housing Spring Pin / Retaining Ring Method Shoulder / Adhesive Method 1) Optional Retaining Ring or Shoulder Optional Integral Commuation 1) 2) Rotor / Shaft Sleeve Stator End Turns Optional Cup Point Set Screws min 3 eq. sp. Motor Housing Stator (Laminations) 2) Optional Banking Step. 0.635mm (0.025in) w max Rotoar Assembly Magnets and Stator Lamination to be in line Drive Shaft or Bearing Assembly 1) Anti-rotation Spring Pin or Keyway Figure 9
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Page 3 and 4: Frameless & Gearmotors: Application
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Page 9 and 10: Frameless Motor Series KO32 to KO25
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