Overview
For pictures of the coupling parts, see attachment at the bottom of this article
Milnor uses flexible drive couplings in many of the hydraulic systems for single stage presses, extractors, and some washer-extractors. The purpose being to transfer power from electric motor to the hydraulic pump.
Flexible drive couplings, also called rod end couplings, are found in the main hydraulic pump/motor system, the oil recirculation system, and in some models of single stage presses, the hydraulic booster system. In extractors and some washer extractors, they are used in hydraulic tilt systems.
Due to pre-manufacture customization, rebuilds, and customization in the field, exact coupling systems and part numbers are difficult to determine.
Application, shaft size, keyway size, pump manufacturer, and torque are factors in determining the coupling part numbers.
All this to say that it is VERY IMPORTANT to have shaft and keyway measurements for motor and pump before ordering these parts. Below are pictures of the 5 coupling sizes Milnor uses. They will be further delineated by bore (shaft) size. Finally, Keyway sizes are also provided. With this information, you will be able to determine the exact coupling part you need.
Tables below the pictures that offer a rough estimate of the parts needed for a certain make, model, and application. Included are
Single Stage Presses,
Extractors, and
Washer Extractors.
This should not be your only factor in choosing these parts.
REMEMBER, OBTAIN SHAFT SIZE AND TYPE (BORE OR SPLINE) ALONG WITH KEYWAY SIZE.
The following tables contain coupling and insert part number for various models. Though they have been correlated with a good cross section of serial numbers over a span of time. As stated above, due to customization, design changes, pump changes in the field, the table may not reflect the coupling part number needed for the listed model. Please get the coupling diameter, shaft diameter, and key width and compare with pictures above to be certain.
MP1A50
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5507B | 27E5507D | 27E5507C | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
| BOOSTER | 27E5505A | 27E5513B | 27E5513A | AHT10043 THRU 9/19/2014
2.9 INCH DIAMETER |
|---|
| BOOSTER | 27E5507Q | 27E5507S | 27E5510 | AHT10043A AFTER 9/19/2014
3.45 INCH DIAMETER |
|---|
MP1A56
INFO FROM MANUALS ONLY| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5507B | 27E5507D | 27E5507C | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
| BOOSTER | 27E5507Q | 27E5507S | 27E5510 | |
|---|
MPL556**
REMEMBER TO CHECK THE SHAFT AND KEY SIZES TO CONFIRM TABLE INFORMATION| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5533 | 27E5507D | 27E5507G | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
| BOOSTER | N/A | N/A | N/A | |
|---|
MPL640**
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5533 | 27E5507D | 27E5507G | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
| BOOSTER | N/A | N/A | N/A | |
|---|
MPL650**
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5533 | 27E5507D | 27E5507C | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
| BOOSTER | N/A | N/A | N/A | |
|---|
MPL656**
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5507C | 27E5507D | 27E5533 | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | Water and Air cool |
|---|
| BOOSTER | N/A | N/A | N/A | |
|---|
MP1556
REMEMBER TO CHECK THE SHAFT AND KEY SIZES TO CONFIRM TABLE INFORMATION| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5510 | 27E5510B | 27E5510A | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
| BOOSTER | 27E5505A | 27E5513B | 27E5513A | THRU APROX 11/2015 |
|---|
| BOOSTER | 27E5507T | 27E5507S | 27E5507U | FROM 11/2015 - 27E5507U
METRIC FOR REXROTH PUMP |
|---|
MP1656
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5507J | 27E5507D | 27E5507C | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
| BOOSTER | 27E5505A | 27E5513B | 27E5513A | |
|---|
| BOOSTER | 27E5507T | 27E5507S | 27E5507U | FROM 11/2015 - 27E5507U
METRIC FOR REXROTH PUMP |
|---|
MP1640
DON'T FORGET! CONFIRM PART NUMBERS BY OBTAINING SIZE OF KEYWAY AND PUMP/MOTOR SHAFT| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5510 | 27E5510B | 27E5510A | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
| BOOSTER | 27E5505A | 27E5513B | 27E5513A | MP1640's as a rule do not have Booster pumps.
The exception, a few models were produced in 2011/2012
that did have booster pumps installed. |
|---|
MP1650
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5507J | 27E5507D | 27E5507C | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
MP1540
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5510 | 27E5510B | 27E5510A | GHC10022 THRU APROX 1/11 |
|---|
| MAIN | 27E5510 | 27E5510B | 27E5504E | GHC10024 FROM APROX 1/11 |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
MP1550
DO YOU HAVE THE MOTOR SHAFT DIAMETER? THE KEYWAY WIDTH?| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5510 | 27E5510B | 27E5510A | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
MP1601 & MP1602
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5510 | 27E5510B | 27E5510A | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506B | FOR DIFFERENCE BETWEEN
27E5506G AND 27E5506B CLICK HERE. |
|---|
MP1603
TO ASSURE YOU ORDER THE CORRECT SIZE, GET THE MEASUREMENTS! DIAMETER OF PUMP AND MOTOR SHAFT AND KEYWAY SIZE.| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5510 | 27E5510B | 27E5510A | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
MP1604
| SYSTEM | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| MAIN | 27E5507J | 27E5507D | 27E5507C | |
|---|
| RECIRCULATION | 27E5506B | 27E5506D | 27E5506G | |
|---|
Extractors
EXTRACTORS USE FLEXIBLE DRIVE COUPLINGS (ROD END COUPLINGS) ON HYDRAULIC TILT SYSTEMS. OLDER UNITS HAVE DIRECT DRIVES FROM MOTOR TO PUMP WITHOUT COUPLINGS (AS PICTURED BELOW)
REMEMBER: PUMP SYSTEMS GET UPDATED AND REPLACED. PLEASE COMPARE MOTOR AND PUMP SHAFT DIAMETERS AND KEYWAY WIDTH TO DETERMINE THE CORRECT COUPLINGS
M9T4836C, M9T4840C, M7T4836C, M7T4840C, M7V4836C, M7V4836L, M7V4836R, M7V4840C, M7V4840L, M7V4840R, M9V4840C, M9V4840L, M9V4840R, MMT4232C, MMT4232L, MMT4232R
| ASSEMBLY | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| AHT17000A | 27E5510 | 27E5510B | 27E5504E | |
MXT4232C, MXT4232L, MXT4232R, MXV4232C, MXV4232L, MXV4232R, MMS4232C, MMS4232L, MMS4232R, MXS4232C, MXS4232L, MXS4232R, MMV4232C, MMV4232L, MMV4232R
COMPARE TO MEASUREMENTS FOR PEACE OF MIND| ASSEMBLY | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| AHT16004A | 27E5510 | 27E5510B | 27E5510A | |
Washer Extractors
A FEW OF OUR WASHER EXTRACTORS USE FLEXIBLE COUPLINGS IN HYDRAULIC TILT SYSTEMS. THE TABLES BELOW SHOW PART NUMBER INFORMATION. AS ALWAYS, IT'S VERY IMPORTANT TO COMPARE WITH THE ACTUAL SHAFT AND KEYWAY MEASUREMENTS.
64040E6N, 64050E6N 72058J2N, 72075J2N
| ASSEMBLY | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
| AHT60120 | 27E5505A | 27E5505B | 27E5508 | |
48040F7N, 48040H7K, 48040H7N, 72046M5K, 68036M5K
| ASSEMBLY | MOTOR COUPLING | INSERT | PUMP COUPLING | ADDITIONAL INFO |
|---|
AHT48001
AHT68005 | 27E793 | 27E5505B | 27E792 | SOME MANUALS HAVE INSERT AS 27E794.
THIS PART HAS BEEN REPLACED BY 27E5505B. |
If you need a new C face adapter for the hydraulic pump:
The part number is
27E5510C for the 6 inch long version for 254TC motors
The part number is
27E5507A for the 7.88 inch version for 286TC frame motors
Booster pumps use
27E5513.
See your part manual for further info.
