Genuine LiftMaster replacement parts for the HJ series industrial-duty hoist/jackshaft operator, 2005 to current production. The HJ5011 is the most common version — 1/2 HP, 115V, single phase. Use the exploded diagram to identify your part by its key number, then match it to the tables below.
Your model number is on the operator’s data label. The first two digits are horsepower and the last two are voltage and phase, so HJ5011 is 1/2 HP at 115V single phase and HJ5023 is 1/2 HP at 208/230V three phase. The HJ is handed — frame plate kits and frame rails come in left and right versions that do not interchange.
Note on brake parts: the HJ uses the standard internal brake solenoids and drum brake kits listed under Service Kits. It does not take the cabled K71-B120H style solenoids fitted to the H series.
If your HJ was built before 2005 these parts will not fit. Those are listed separately on our HJ Prior to 2005 page.
1/2 HP — most common: HJ5011 (115V, 1PH), HJ5021 (230V, 1PH), HJ5023 (208/230V, 3PH), HJ5043 (460V, 3PH), HJ5053 (575V, 3PH), HJ5025 (230V, 50Hz), HJ5038 (380V, 3PH, 50Hz)
1/3 HP: HJ3311, HJ3321, HJ3323, HJ3325, HJ3338, HJ3343, HJ3353
3/4 HP: HJ7511, HJ7521, HJ7523, HJ7525, HJ7538, HJ7543, HJ7553
1 HP: HJ1011, HJ1021, HJ1023, HJ1043, HJ1053
Logic 5.0 units: HJ501L5, HJ503L5, HJ505L5, HJ331L5, HJ333L5, HJ751L5, HJ753L5, HJ755L5, HJ101L5, HJ103L5, HJ105L5
| Ref | Part # | Description |
|---|---|---|
| 1 | K11-19473 | Clutch Shaft, HJ |
| 2 | K12-19504 | Flange Bearing, 1" |
| 3 | 15-30822 | Dual Sprocket, 32/14 Tooth |
| 4 | K15-19484 | Sprocket, 14T48 |
| 5 | K18-11379 | Compression Spring |
| 6 | K18-30957 | Compression Spring |
| 7 | K72-12789 | Hand Chain Shaft Kit |
| 8 | K75-19985 | Pulley Assembly |
| 9 | K39-10167 | Clutch Disc |
| 10 | K72-12789 | Hand Chain Shaft Kit |
| 10A | K12-10883 | Nylon Bearing |
| 10B | K12-10882 | Bushing, 3/4" x 1" x 5/8" |
| 10C | K80-10883 | Washer, 3/4" x 2-1/2" |
| 11 | K80-19846 | Disconnect Hub, J |
| 12 | K15-19478 | Sprocket, 48B32T, 1-1/2" B |
| 13 | K16-5L304 | V Belt, 30-1/32" |
| 14 | K75-19978-R | Frame Plate Kit, Right Hand |
| 14 | K73-HFRAME-R | Frame Kit, Right Hand |
| 15 | K75-19978-L | Frame Plate Kit, Left Hand |
| 15 | K73-HFRAME-L | Frame Kit, Left Hand |
| 16 | K75-19977 | Arm Kit |
| 17 | K75-19981 | Arm Kit, H |
| 18 | K17-6014 | Pulley, 2" OD, 5/8" B |
| 19 | K23-10916 | Interlock Switch, 125/250VAC, 15A, SPDT |
| 20 | K12-10891 | Ball Bearing, 1" |
| — | K19-48047M | Chain, #48 x 47 |
| — | K94-36992 | Brake Cable Harness, 1PH, L5 |
| — | K94-36994 | Brake Cable Harness, 3PH, L5 |
| — | K22-36899 | Brake Solenoid, 1PH, L5 |
| — | K22-36900 | Brake Solenoid, 3PH, L5 |
| Ref | Part # | Description |
|---|---|---|
| K1 | K72-19982 | Clutch Shaft Kit |
| K2 | K72-19974 | Output Shaft Kit, H, J |
| — | K71-B120 | Internal Brake Solenoid, 120V |
| — | K71-B240 | Internal Brake Solenoid, 240V |
| — | K71-B575 | Internal Brake Solenoid, 575V |
| — | K71-B575-1 | Internal Brake Solenoid, 575V |
| — | K71-D1PH | Drum Brake Kit, 1PH |
| — | K71-D3PH | Drum Brake Kit, 240V |
The motor’s part number is printed on the motor’s own data label. If you can reach it, read the number straight off the label and match it below — that is the most reliable way to order the right motor. TEFC motors are the NEMA 4/12 enclosure versions.
| Model | Volts | Ph | Part # |
|---|---|---|---|
| HJ501L5 | 115/230 | 1 | K20-1050B-2LP-H24 |
| HJ503L5 | 230/460 | 3 | K20-3050B-4P-H24 |
| HJ505L5 | 575 | 3 | K20-3050M-5-H25 |
| HJ331L5 | 115/230 | 1 | K20-1050B-2LP-H24 |
| HJ333L5 | 230/460 | 3 | K20-3050B-4P-H24 |
| HJ751L5 | 115/230 | 1 | K20-1075B-2LP-H24 |
| HJ753L5 | 230/460 | 3 | K20-3075B-4P-H24 |
| HJ755L5 | 575 | 3 | K20-3075M-5-H25 |
| HJ101L5 | 115/230 | 1 | K20-1100B-2LP-H24 |
| HJ103L5 | 230/460 | 3 | K20-3100B-4P-H24 |
| HJ105L5 | 575 | 3 | K20-3100M-5-H25 |
Electrical box parts. The HJ shares its control boxes with the H and J, and those boxes use different parts from the T and GT versions. The HJ was also offered in a NEMA 4/4X enclosure and, on early units, the contactor-style box.
| Ref | Part # | Description |
|---|---|---|
| 1 | K13-10024 | Limit Nut |
| 2 | K23-10041 | Limit Switch, SPDT, 10A, 125/250VAC |
| 3 | K75-35626 | E-Box Cover — J, H, HJ |
| 4 | K21-14182 | Transformer, 120/240V, 24VAC, 20VA |
| 4 | K21-35057 | Transformer, 460V, 24VAC |
| 4 | K21-35077 | Transformer, 575V, 24VAC |
| 5 | K29-31244 | Relay, DPST, 24V, 30A |
| 5 | K29-31245 | Relay, 12V, 30A |
| 6 | K29-31229 | Relay, 24VDC, 30A, SPDT, 1PH |
| 7 | K74-31243 | MOV Kit, L5, 1PH/3PH |
| 8 | K79-15016-1 | RPM Sensor Kit |
| 9 | K001A6837 | Logic Board, L4 |
| 10 | K002A0761 | Receiver Coaxial Cable, 315MHz |
| 11 | K001C3196-3 | Antenna, 315MHz |
| 12 | K42-31247 | Terminal Block, 3 Position, 600V, 20A |
| 13 | K42-10040 | Terminal Block, 3 Position |
| — | K74-MODELH | Main Wire Harness |
| K1 | K72-14130-1 | Limit Shaft Kit — H, J, GH |
| K2 | K72-12515-1 | Limit Switch Kit |
| Ref | Part # | Description |
|---|---|---|
| 1 | K13-10024 | Limit Nut |
| 2 | K23-10041 | Limit Switch, SPDT, 10A, 125/250VAC |
| 3 | K75-36913 | Cover for Current Sense Kit — H, J, L5 |
| 4 | K21-14182 | Transformer, 120/240V, 24VAC, 20VA |
| 4 | K21-36793 | Transformer, 208/230/460V, 20VA |
| 4 | K21-35077 | Transformer, 575V, 24VAC |
| 5 | K74-31243 | MOV Kit, L5, 1PH/3PH |
| 6 | K79-15016-1 | RPM Sensor Kit |
| 7 | K001D8395MC | Logic Board, 1PH/3PH, Current Sense Ready L5 |
| 8 | K002A0761 | Receiver Coaxial Cable, 315MHz |
| 9 | K001C8103-1 | Antenna |
| 10 | K001D8396-1 | Power Board, 115/230V, 1PH, L5 |
| 10 | K001D8397 | Power Board Kit, 3PH, L5 |
| 10 | K001D8397-1 | Power Board Kit, 575V, L5 |
| 11 | K21-38158 | Current Sense Harness, 3PH, L5 |
| — | K94-36934 | Main Wiring Harness, L5 |
| K1 | K72-14130-1 | Limit Shaft Kit — H, J, GH |
| K2 | K72-12515-1 | Limit Switch Kit |
| Ref | Part # | Description |
|---|---|---|
| 1 | K03-35711 | Contactor Relay, 24V, 2NO+2NC |
| 2 | K21-7115-1 | Transformer, 115/230V, 1PH |
| 2 | K21-7460 | Transformer, 240/480V, 3PH |
| 2 | K21-7460-1 | Transformer, 230/460V, 3PH |
| 2 | K21-7575 | Transformer, 575V, 24VAC |
| 2 | 21-7575-1 | Transformer, 575V, 3PH |
| 3 | K001A6837 | Logic Board, L4 |
| 4 | K52C0481 | Bridge Rectifier Kit |
| 5 | K74-31243 | MOV Kit, L5, 1PH/3PH |
| 6 | K42-31247 | Terminal Block, 3 Position, 600V, 20A |
| 7 | K23-10041 | Limit Switch, SPDT, 10A, 125/250VAC |
| 8 | K72-12515-1 | Limit Switch Kit |
| 9 | K13-10024 | Limit Nut |
| 10 | K79-15016-1 | RPM Sensor Kit |
| 11 | K72-33192 | Limit Shaft Kit |
| 12 | K75-35815 | Enclosure, 1PH, N4 |
| 12 | K75-35816 | Enclosure, 3PH, N4 |
| 13 | K29-ABC-2 | Fuse, 250V, 2A |
| 14 | K74-19499 | Antenna |
| 15 | AUXCARD | Option Card Aux Relay Kit |