In Tech Support

Why Pulley Size Is So Important for Your Belt Driven Fan Motors

Do you want to make the exhaust fan motors in your poultry houses run better and last longer? Be sure to check the pulley sizes. Believe it or not, even a small difference in pulley size can make a big difference in the overall life of your replacement fan motor.

Here’s why: if you increase the diameter of the pulley by 10%, you simultaneously increase the power needed to drive the fan by 33%. Therefore, if your fan motor is pulling 4 amps with the correct-sized pulley, it would jump to 5.32 amps with a pulley that’s 10% larger. You may have increased the air flow in your chicken house, but at what cost? Over time, the increase in amperage could overload the motor to the point of failure.

We’re here to help you make the most of your replacement fan motors, no matter which types of exhaust fans you have in your chicken houses. That’s why we’ve compiled the helpful information below for you to reference the next time you replace your 1hp or 1.5hp fan motors. If you have questions, just let us know.

Check Your Pulley Size Below

If you’re not sure the exact pulley you need for your particular fan, simply search the information below by scrolling to the brand and viewing the Current or Archived Information. If you don’t see your model number in the Current Information, be sure to check the Archived Information as well. If you don’t find your particular fan in the tables below, please contact us, and we’ll do everything we can to help you.

Acme Fans

Current Information

MODELSIZEHPDRIVEAXLE
BDR48J2-C48"1AK32AK104
BDR48J2L48"1AK34AK114
BDRB48J-C348"1AK34AK114
BDRB48K-C348"1.5AK34AK114
DC48J-C48"13.3" o.d.14.3" o.d.
DDPG48J-C48"1AK30AK114
DDPS48J-C48"1AK30AK114
DDPG50J-C50"1AK26AK94
DDPG50J-C50"1AK26AK94
DDPG50JL-C50"1AK22AK94
DDPS50J-C50"1AK22AK94
BDR54J54"1AK34AK144
BDR54J154"1AK39AK144
BDR54J-C54"1AK34AK144
BDR54JL-C54"1AK27AK144
BDR54K-C54"1.53.8" o.d.13.3" o.d.
BDR54KT-C54"1.54.5" o.d.15.3" o.d.
BDRV54J1-C254"1AK3413.4" o.d.
BDRV54J1-C354"1AK3413.3" o.d.
BDRV54J2-C254"1AK3413.4" o.d.
BDRV54J2-C354"1AK3413.3" o.d.
BDRV54J-C254"1AK3213.4" o.d.
BDRV54J-C354"1AK3213.3" o.d.
BDRV54J-CB54"1AK34AK134
BDRV54JL-C254"1AK3014.3" o.d.
BDRV54JL-C354"1AK3014.3" o.d.
BDRV54K-C254"1.5AK39AK134
BDRV54K-C354"1.5AK39AK134
BDRV54K-CB54"1.5AK39AK134
DC54J-C54"1AK28AK134
DC54JL-C54"1AK23AK134
DC54K-C54"1.5AK34AK154
DC54K-C54"1.5AK34AK154
DDPGV54J-C54"1AK34AK134
DDPGV54K-C54"1.5AK39AK134
DDPSV54J-C54"1AK34AK134
DDPSV54K-C54"1.5AK39AK134
Archive Information

MODELSIZEHPDRIVEAXLE
BDR48J-A48"1AK30AK114
BDR48J-A48"1AK30AK114
BDR48J-A48"1AK30AK114
BDR48J-AL48"12.8" o.d.10.9" o.d.
BDR48J-AL48"12.8" o.d.10.9" o.d.
BDR48J-C48"13.3"14.3"
BDR48J-C48"1AK30AK114
BDR48J-C48"1AK27AL114
BDR48JL-A48"1AK30AL114
BDR48JL-C48"1AK27AL114
BDR48JL-C48"1AK27AL114
BDR48K-A48"1.5AK34ALK114
BDR48K-C48"1.5AK34ALK114
DC48J-A48"13.3" o.d.14.3" o.d.
DC48J-A48"13.3"14.3"
DC48J-C48"13.3"14.3"
DDPG48J-C48"13.0" o.d.10.9"
DDPG48J-C48"13.0" o.d.10.9"
DDPG48J-C48"1AK34AKL114
DDPG48K-C48"1.53.5" o.d.11" o.d.
DDPS48J-C48"13.0" o.d.10.9"
DDPS48J-C48"13.0" o.d.10.9"
DDPS48J-C48"1AK34AL114
DDPS48K-C48"1.53.5" o.d.11" o.d.
DDPG50J1-C50"1AK26AL94
DDPG50J1-CR50"1AK26AK94
DDPG50J-C50"1AK25AK94
DDPG50J-C50"1AK25AK94
DDPG50JL-C50"1AK23AL94
DDPG50K-C50"1.5AK28AL94
DDPS50J1-C50"1AK26AK94
DDPS50J1-CR50"1AK26AK94
DDPS50J-C50"1AK25AL94
DDPS50J-C50"1AK25AK94
DDPS50JL-C50"1AK23AL94
DDPS50K-C50"1.5AK28AL94

Aerotech Fans

Current Information

MODELSIZEHPDRIVEAXLE
AT4815Z1CA48"1.53.8" o.d.10.3" o.d.
AT4815Z1CP48"1.5AK39AK104
AT481Z1CA48"13.4" o.d.10.3" o.d.
AT481Z1CP48"13.4" o.d.10.3" o.d.
AT481Z2CA48"13.3" o.d.10.3" o.d.
AT481Z2CP48"13.3" o.d.10.3" o.d.
AX481T1CJ48"1AK3410.3" o.d.
AX481T1CP48"1AK34AK104
GB4815T1P48"1.5AK41AK104
GB481T1P48"1AK39AK104
WF5015T1CJ50"1.5AK4113" o.d.
WF5015T1CP50"1.5AK4513" o.d.
WF5015T1CY50"1.5AK4613" o.d.
WF5015V1CD50"1.5AK4113" o.d.
WF501T1CJ50"1AK3513" o.d.
WF501T1CP50"1AK3913" o.d.
WF501T1CY50"1AK3913" o.d.
WF501V1CD50"1AK3513" o.d.
AX5115T1CP51"1.5MA35AK104
AX511T1CP51"1MA3511" o.d.
VX5115F1CD51"1.5AK34AK104
VX5115F1CEP51"1.5AK34AK104
VX5115F1CER51"1.5AK34AK104
VX5115F1CP51"1.5AK34AK104
VX5115F1CR51"1.5AK34AK104
VX5115F1CT51"2AK34AK104
VX5115F1GP51"1.5AK34AK104
VX5115F1GR51"1.5AK34AK104
VX511F1CD51"1AK34AK112
VX511F1CEP51"1AK34AK112
VX511F1CER51"1AK34AK112
VX511F1CP51"1AK34AFD112
VX511F1CT51"1AK34AK112
VX511F1GP51"1AK34AK112
VX511F1GR51"1AK34AK112
VX512F1CT51"2AK39AK104
WF5415T1CEJ54"1.5BC4613" o.d.
WF5415T1CEP54"1.5BC4613" o.d.
WF5415T1CJ54"1.5BC4613" o.d.
WF5415T1CP54"1.5BC4613" o.d.
WF5415V1CD54"1.5AK4313" o.d.
WF541T1CEJ54"1AK4113" o.d.
WF541T1CEP54"1AK4113" o.d.
WF541T1CJ54"1AK4113" o.d.
WF541T1CP54"1AK4113" o.d.
WF541V1CD54"1AK4113" o.d.
WF542T1CJ54"2AK4613.1" o.d.
WF542T1CP54"2AK4613" o.d.
WF542V1CD54"2AK4613" o.d.
WM5415F1CB54"1.5AK4313" o.d.
WM5415G1CD54"1.5AK4313" o.d.
WM541F1CB54"1AK4113" o.d.
WM541G1CD54"1AK4113" o.d.
Archive Information

MODELSIZEHPDRIVEAXLE
AT4815Z1CA48"1.55" variable10.25"
AT4815ZBICA48"1.55" variable10.25"
AT481Z1CA48"1AK34AK104
AT481Z1CP48"1AK34AK104
AT481Z2CA48"15" variable 10.25"AK104
AT481ZB1CA48"1AK34AK104
AX481T1A48"1AK34AK104
AX481T1P48"1AK34AK104
AX481V1CA48"1AK34AK104
AX481V1CP48"1AK34AK104
GB4815Q1P48"1.54.0"10.3" o.d.
GB481Q1P48"13.5" o.d.10.3" o.d.
GB481T1CP48"1AK39AK104
GB481T1P48"13.4" o.d.AK104
GB481V1CP48"1AK3910.3" o.d.
VX5115F3CR51"1.53.3" o.d.10.3" o.d.
VX511F1CR51"13.8" o.d.12.3" o.d.
VX517F1CR51"13.1" o.d.11.3" o.d.

Chore-Time Fans

Current Information

MODELSIZEHPDRIVEAXLE
38264-482248"1.5MA33AK94
38264-482548"1.5MA33AK94
38434-4820 + shutter48"1AK288.5" o.d.
47898-482248"1.53.3" o.d.8.3" o.d.
47898-482548"1.53.3" o.d.8.3" o.d.
48318-21248"1.5AK30AK94
48318-21548"1.5AK30AK94
48318-22548"1AK30AK94
48318-23548"1AK27AK84
49451-2148"1.5AK30AK94
49451-2248"2.5AK30AK94
49451-2348"1.5AK27AK84
49515-2148"1.5AK30AK94
49515-2248"1AK30AK94
49515-2348"1AK27AK84
48319-21552"1.5AK30AK94
48319-22552"1.5AK30AK94
49511-2152"1.5AK30AK94
49511-2252"1.5AK30AK94
49519-2152"1.5AK30AK94
49519-2252"1.5AK30AK94
49519-42 variable speed52"1.5AK309.3" o.d.
49740-2152"1.5AK30AK84
49740-2252"1.5AK30AK94
52157-2154"1.5AK30AK94
52157-2254"1.5AK30AK94
Archive Information

MODELSIZEHPDRIVEAXLE
38264-482148"13.5" o.d.10.3" o.d.
38264-482248"13.5" o.d.10.3" o.d.
38434-482148"1AK288.5" o.d.
38434-482248"1AK288.5" o.d.
38437-482148"1AK288.5" o.d.
38437-482248"1AK288.5" o.d.
38441-482148"1AK288.5" o.d.
38441-482248"1AK288.5" o.d.
38787-482148"1AK288.5" o.d.
38787-482248"1AK288.5" o.d.
38788-482148"1AK288.5" o.d.
38788-482248"1AK288.5" o.d.
38953-482148"13.5" o.d.10.3" o.d.
38953-482248"13.5" o.d.10.3" o.d.
40921-482248"12.9" o.d.8.5" o.d.
41041-482248"1AK288.5" o.d.
42049-482248"12.8" o.d.8.5" o.d.
43679-482248"1AK288.5" o.d.
43680-482248"1AK288.5" o.d.
45575-482248"1AK287.8" o.d.
45576-482248"1AK287.8" o.d.
46868482248"1AK30AK94
46868-484248"1AK30AK94
46992482248"1AK27AK84
46992-484248"1AK27AK84
46997-482248"1AK30AK94
46997-484248"1AK30AK94
48483-2152"1AK30AK94
48483-2252"1AK30AK94
48483-4252"1AK30AK94

Cool Air Fans

Current Information

MODELSIZEHPDRIVEAXLE
MNBF48L48"1AK3416"o.d.
MNBF48M1P48"1.5AK4416" o.d.
MNBFC48L48"1AK3416" o.d.
MNBFC48M3P48"1.5AK4416" o.d.
MNBFC48MIP48"1.5AK4416" o.d.
MNBFH48L48"1AK3916" o.d.
MNBFHC48L48"1AK3916" o.d.
MNBR48L48"1AK309.5" o.d.
MNBR48M1P48"1.5AK349.5" o.d.
MNBR48M3P48"1.5AK349.5" o.d.
MNBRC48L48"1AK309.5" o.d.
MNBRC48M1P48"1.5AK349.5" o.d.
MNBRC48M3P48"1.5AK349.5" o.d.
MNBRE48L48"12.8" o.d.9.5" o.d.
MNBREC48L48"1AK289.5" o.d.
MNCFA48L48"1AK3916" o.d.
MNCFA48M1P48"1.5AK4416" o.d.
MNCFAC48L48"1AK3916" o.d.
MNCFAC48M1P48"1.5AK4416" o.d.
MNCFAE48L48"1AK3416" o.d.
MNCFAEC48L48"1AK3416" o.d.
MNCFB48L48"1AK3915.5"
MNCFBC48L48"1AK3915.6"
MNCFBE48L48"1AK3415.5"
MNCFBEC48L48"1AK3415.6"
MNCFC52L48"1AK3415.5"
MNCFC52M1P48"1AK3915.5"
MNCFEC52L48"1AK3015.5" o.d.
FGBC52L53"1AK279.5"
FGBC52M53"1.5MA309.5"
FGBCE52L53"1AK259.5"
FGBR52L53"12.6" o.d.9.8" o.d.
FGBR52L53"12.6" o.d.9.8" o.d.
FGBR52M53"1.5AK309.8" o.d.
MNBR52L53"1MA269.5" o.d.
MNBR52L53"1MA269.5" o.d.
MNBR52M53"1.5AK289.5"
MNBR52M53"1.5AK289.5"
MNBRC52L53"1MA269.5"
MNBRC52L53"1MA269.5"
MNBRC52M53"1.5AK289.5"
MNBRC52M53"1.5AK289.5"
MNBRDD52L53"12.7" o.d.9.5" o.d
MNBRDD52L53"12.7" o.d.9.5" o.d
MNBRDD52L 3 ph.53"12.7" o.d.9.5" o.d
MNBRDD52LE53"12.7" o.d.9.5" o.d
MNBRDD52LE53"12.6" o.d.9.5" o.d
MNBRDD52LE 3 ph.53"12.6" o.d.9.5" o.d
MNBRDD52M53"13.0" o.d.9.5" o.d
MNBRDD52M 3 ph.53"1.53.0" o.d.9.5" o.d
MNBRE52L53"1AK239.5"
MNBRE52L53"1AK239.5"
MNBREC52L53"1AK239.5"
MNBREC52L53"1AK239.5"
MNCFC52L53"1AK3415.6" o.d.
MNCFC52M53"1.5AK3915.6" o.d.
MNEF52L53"1AK269.5"
MNEF52M53"1.5AK289.5"
MNEFC52L53"1AK269.5"
MNEFC52M53"1.5AK289.5"
MNEFE52L53"1MA259.5"
MNEFEC52L53"1MA259.5"
NBRID52L-SQ53"1MA3311.4" o.d.
NBRID52L-SQ53"1MA3311.4" o.d.
NBRID52M-SQ53"1.5AK3911.4" o.d.
NBRID52M-SQ53"1.5AK3911.4" o.d.
Archive Information

MODELSIZEHPDRIVEAXLE
MNBF48L48"1AK3416"o.d.
MNBF48M1P48"1.5AK4416" o.d.
MNBFC48L48"1AK3416" o.d.
MNBFC48M3P48"1.5AK4416" o.d.
MNBFC48MIP48"1.5AK4416" o.d.
MNBFH48L48"1AK3916" o.d.
MNBFHC48L48"1AK3916" o.d.
MNBR48L48"1AK309.5" o.d.
MNBR48M1P48"1.5AK349.5" o.d.
MNBR48M3P48"1.5AK349.5" o.d.
MNBRC48L48"1AK309.5" o.d.
MNBRC48M1P48"1.5AK349.5" o.d.
MNBRC48M3P48"1.5AK349.5" o.d.
MNBRE48L48"12.8" o.d.9.5" o.d.
MNBREC48L48"1AK289.5" o.d.
MNCFA48L48"1AK3916" o.d.
MNCFA48M1P48"1.5AK4416" o.d.
MNCFAC48L48"1AK3916" o.d.
MNCFAC48M1P48"1.5AK4416" o.d.
MNCFAE48L48"1AK3416" o.d.
MNCFAEC48L48"1AK3416" o.d.
MNCFB48L48"1AK3915.5"
MNCFBC48L48"1AK3915.6"
MNCFBE48L48"1AK3415.5"
MNCFBEC48L48"1AK3415.6"
MNCFC52L48"1AK3415.5"
MNCFC52M1P48"1AK3915.5"
MNCFEC52L48"1AK3015.5" o.d.
FGBC52L53"1AK279.5"
FGBC52M53"1.5MA309.5"
FGBCE52L53"1AK259.5"
FGBR52L53"12.6" o.d.9.8" o.d.
FGBR52L53"12.6" o.d.9.8" o.d.
FGBR52M53"1.5AK309.8" o.d.
MNBR52L53"1MA269.5" o.d.
MNBR52L53"1MA269.5" o.d.
MNBR52M53"1.5AK289.5"
MNBR52M53"1.5AK289.5"
MNBRC52L53"1MA269.5"
MNBRC52L53"1MA269.5"
MNBRC52M53"1.5AK289.5"
MNBRC52M53"1.5AK289.5"
MNBRDD52L53"12.7" o.d.9.5" o.d
MNBRDD52L53"12.7" o.d.9.5" o.d
MNBRDD52L 3 ph.53"12.7" o.d.9.5" o.d
MNBRDD52LE53"12.7" o.d.9.5" o.d
MNBRDD52LE53"12.6" o.d.9.5" o.d
MNBRDD52LE 3 ph.53"12.6" o.d.9.5" o.d
MNBRDD52M53"13.0" o.d.9.5" o.d
MNBRDD52M 3 ph.53"1.53.0" o.d.9.5" o.d
MNBRE52L53"1AK239.5"
MNBRE52L53"1AK239.5"
MNBREC52L53"1AK239.5"
MNBREC52L53"1AK239.5"
MNCFC52L53"1AK3415.6" o.d.
MNCFC52M53"1.5AK3915.6" o.d.
MNEF52L53"1AK269.5"
MNEF52M53"1.5AK289.5"
MNEFC52L53"1AK269.5"
MNEFC52M53"1.5AK289.5"
MNEFE52L53"1MA259.5"
MNEFEC52L53"1MA259.5"
NBRID52L-SQ53"1MA3311.4" o.d.
NBRID52L-SQ53"1MA3311.4" o.d.
NBRID52M-SQ53"1.5AK3911.4" o.d.
NBRID52M-SQ53"1.5AK3911.4" o.d.

Hired Hand Fans

Current Information

MODELSIZEHPDRIVEAXLE
6603-013148"1.53.5" o.d.10.3" o.d.
6603-601048"13.8" o.d.10.3" o.d.
6603-601048"13.8" o.d.10.3" o.d.
6603-602048"14.0" o.d.10.3" o.d.
6603-602048"14.0" o.d.10.3" o.d.
6603-602048"14.0" o.d.10.3" o.d.
6603-602548"14.0" o.d.10.3" o.d.
6603-602548"14.0" o.d.10.3" o.d.
6603-606748"13.8" o.d.10.3" o.d.
6603-606748"13.8" o.d.10.3" o.d.
6603-702148"13.5" o.d.10.3" o.d.
6603-702148"13.5" o.d.10.3" o.d.
6603-703148"13.5" o.d.10.3" o.d.
6603-703148"13.5" o.d.10.3" o.d.
6603-060652"13.5" o.d.10.3" o.d.
6603-060652"13.5" o.d.10.3" o.d.
6603-650052"13.8" o.d.10" o.d.
6603-650252"1MA3510" o.d.
6603-650352"1.5AK4110" o.d.
6603-650552"1.5MA3510" o.d.
6603-704152"13.5" o.d.10.3" o.d.
6603-704152"13.5" o.d.10.3" o.d.
6603-705152"13.8" o.d.10.3" o.d.
6603-705152"13.8" o.d.10.3" o.d.
6603-740152"13.8" o.d.10.3" o.d.
6603-740152"13.8" o.d.10.3" o.d.
6603-740152"13.8" o.d.10.3" o.d.
6603-740152"13.8" o.d.10.3" o.d.
6603-708254"1.53.4" o.d.10.3" o.d.
6603-709054"13.5" o.d.10.3" o.d.
6603-709254"14.0" o.d.10.3" o.d.
Archive Information

MODELSIZEHPDRIVEAXLE
6603-550048"1AK3410.4" o.d.
6603-550048"13.5" o.d.10.3" o.d.
6603-558048"13.5" o.d.10.3" o.d.
6603-600048"1AK3410.4" o.d.
6603-600048"1AK34AK104
6603-6002w/cone48"1AK34AK104
6603-6002w/cone48"1AK3410.4" o.d.
6603-6002w/cone48"1AK3410.4" o.d.
6603-601048"1MA3810.4" o.d.
6603-601048"1MA3810.4" o.d.
6603-601048"1MA3810.4" o.d.
6603-601048"1AK39AK104
6603-602048"1AK41AK104
6603-6020w/cone48"1MA4010.4" o.d.
6603-6020w/cone48"1MA4010.4" o.d.
6603-603048"1MA3810.4" o.d.
6603-603048"1MA3810.4" o.d.
6603-603048"1MA3810.4" o.d.
6603-603448"1AK3410.4" o.d.
6603-603448"1AK3410.4" o.d.
6603-603448"1AK3410.4" o.d.
6603-708654"13.8" o.d.10.3"
6603-708754"19.95" o.d.10.3"
6603-708854"1.53.8" o.d.10.3"
6603-708954"13.45" o.d.10.3"
6603-713254"1.53.45" o.d.10.3"
6603-713354"1.53.95" o.d.10.3"

DATA PROVIDED BY BESS LAB

Our thanks to BESS Lab from the Department of Agricultural and Biological Engineering at The University of Illinois at Urbana-Champaign for providing this data based on their agricultural ventilation performance testing.