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See below to access other pages/categories. To order, highlight desired Product #, right click to copy, then go to Order Desk and paste in appropriate field.

Transition Base - for AC Motors
Uses: Compensate for the difference in mounting dimensions and shaft height of a rigid base NEMA T-frame (new) to the next higher NEMA U-frame (obsolete) already installed. This makes it possible, for example, to replace a 10Hp NEMA 254U (obsolete) frame motor with a 10Hp NEMA 215T frame motor (new replacement) WITHOUT modifying the basic installation. Shaft sizes will always match. 
Features: For horizontal mounting only.  Click on "Frame" to go to dimensional drawings.
Obsolete U-Frame New T-Frame Shaft Product #
182/184 143T/145T f" 3M130
213/215 182T/184T 1c 3M131
254U/256U 213T/215T 1d 3M132
284U/286U 254T/256T 1e 3M367
324U/326U 284T/286T 1f 413228
364U/365U 324T/326T 2c 413632
404U/405U 364T/365T 2d 414036
444U/445U 404T/405T 2f 414440

Mounting Base - for Fasco Motors
Uses: Used to mount shaded pole (SP) and Permanent Split Capacitor (PSC) motors in direct drive heating and air conditioning units. Includes a set of mounting clamps.  

Note: Mounting bases also available for Universal Brand Motors.
"A"-Length is the distance between motor mounting rings.

Motor "A" Length Shaft Height Notes Product #
3.54 3" 3" available 30-354
3.86 3 3" available 30-386
4.08 3 3" available 30-408
4.17 3 3" not avail. 35-417
4.35 3 3" available 30-435
4.61 3 3" available 30-461
4.79 3 3" available 30-479
4.92 3 3 35-492
5.17 3 3" available 35-517
5.42 3 3" available 35-4542
5.58 3 3" available 35-558
5.95 3 3" available 35-595
7.05 3 3" available 35-705

Adjustable Motor Base 
NEMA 48-286T-Frames
Uses: Simplify floor-mounting and belt tension adjustment on NEMA 48 thru 447T and U-frame motors. 

Features: One-piece steel mounting bases have single adjusting bolt to position mounted motor for proper belt tension during initial installation and later maintenance.  Click on Frame for motor mounting dimensions.

For NEMA Frame L W H Product #
48 10" 6" 1c" 410048-00
56 10e 6 1c 3M276
143T 10 7 1c 3M277
145T 10 8 1c 3M278
182, 182T 12: 9 1 3M279
184, 184T 12: 10 1 3M280
213, 213T 15 11 1: 3M281
215, 215T 15 12 1: 3M282
254, 254T 17: 15c 2 410254-02
256, 256T 17: 16f 2 410256-02
284, 284T 19: 16f 2 410284-02
286, 286T 19: 18d 2 410286-02
For frame sizes larger than 286T, please contact the office/order desk.

To order, highlight desired Product #, right click to copy, then go to Order Desk and paste in appropriate field.

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Bock Motors In Motion
Phone #416-674-2303 or #1 (213) 471-8671      Fax# 1 (866) 286-2089
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