Standard Motor Catalog

Section TR Technical Reference Guide

FRAME, NON-STANDARD Requests are occasionally received to furnish motors in frame sizes either larger or smaller than NEMA standard. If frame size is larger than standard it is to be supplied, the standard motor rating for the frame size that will be furnished. If smaller than standard frame is required, please contact Wolong America for feasibility and terms. GREASE AND RELIEF FITTINGS Motors with regreasable bearing systems can be supplied with regrease fittings and automatic grease relief devices. Severe-duty motors are supplied with extended hydraulic Motors are furnished with a single straight shaft with sled runner keyway and a rectangular key. For motors in frames 182 through 449, a long shaft for V-belt drive is supplied for a majority of ratings and is denoted by the suffix “T” or “L” on the motor frame size. Two-pole (3600 RPM) motors in frames 284 through 449 and certain other 449 frame ratings are furnished with short shafts for direct connection. These motors are denoted with the suffix “TS”, “LL” or “LS” on the motor frame size. Standard double-end shaft extensions are available for motors in frames 143 through 5011. Special shaft designs are available including differences in dimensions and/or materials as follows: Length: Up to 10 inches longer than standard for motors in frames 182-449 grease fittings and plugs. SHAFTS, SPECIAL

Table 29: C-Face Mounting Dimensions (inches) Dimension in inches

Frame Diameter

Rabbet Diameter

Bolt Circle

Bolt Holes

BF

NEMA Frame Size

Tap Size

Min. Depth

BD

AK

AJ

182-184 9.00 213-215 8.68 254-256 8.68

8.50 8.50 8.50

7.25 .50-13 0.88 7.25 .50-13 0.88

7.25 .50-13 0.88 284-286 10.75 10.50 9.00 .50-13 0.88 324-326 12.75 12.50 11.00 .625-11 1.06 364-365 13.00 12.50 11.00 .625-11 1.06 404-405 13.00 12.50 11.00 .625-11 1.06 444-449 13.00 12.50 14.00 .625-11 1.06 500 18.00 16.50 14.50 .625-11 1.06 Note: Frames 180 through 326 have 4 holes; 364 and larger have 8 holes.

Up to 13 inches longer than standard for motors in frames 509-5013 Longer than standard shafts are usually suitable for direct connection. Other drives such as belts or gearing may require special bearings and should be referred to Wolong America.

Figure 30: Type D-Flange

Table 30: D-Flange Mounting Dimensions (inches) Dimension in inches

TECHNICAL REFERENCE GUIDE

Face Diameter

Rabbet Diameter

Bolt Circle

Bolt Holes

NEMA Frame Size

Keyway: Sled-runner, round end, or Woodruff #3 or #9

BD

AK

AJ

BF

182-184 11.00 213-215 11.00 254-256 14.00 284-286 14.00 324-326 18.00 364-365 18.00 404-405 21.90 444-449 21.94

9.00 9.00

10.00 10.00 12.50 12.50 16.00 16.00 20.00 20.00 22.00

0.53 0.53 0.81 0.81 0.81 0.81 0.81 0.81

Hole:

Drilled radially or in the end of the shaft. Drilled and tapped in the end of the shaft. Hole depth limited to three times the hole diameter 26.

11.00 11.00 14.00 14.00 18.00 18.00 18.00

Steps:

One or more reductions in shaft diameter.

Threads: Class 2A right-hand thread size appropriate to the shaft diameter.

500 0.81 Note: Frames 182 through 365 have 4 holes. 404 and larger have 8 holes. C-face and D-flange kits are available for field modification of standard motors by an Authorized GE Service center. These kits are provided as a convenience item. These modified motors will not meet NEMA BA dimensions and there is some loss in usable shaft length. 25.00

Squared: Milled flats on four sides of one step.

Tapered: 1- 1/4 or 1- 1/2 inch per foot taper with threads, nut and lock washer.

TR.36

Data subject to change without notice. 03/24 • www.wolongamerica.com