Joy 600128-1574 Cutter Motor Rewind – 210 HP 950 V
Stator rewind and mechanical rebuild of the Joy 600128-1574 cutter motor, with recorded IEEE tests.
In short
The Joy 600128-1574 is a 210 HP, 550/950 V, 1,760 rpm AC motor on frame 20B350J, listed with and without clutch. It shares the 20B350J frame with the 250 HP motor TEMISA has already rewound. TEMISA rewinds the stator with Class H form-wound coils, restores bearing fits, balances the rotor and releases it with recorded IEEE tests.
Joy 600128-1574 nameplate data
| Part number | 600128-1574 |
|---|---|
| Power | 210 HP |
| Voltage | 550 / 950 V |
| Speed | 1,760 rpm |
| Frame | 20B350J |
| Variants | With and without clutch |
Application
Which continuous miners use the Joy 600128-1574?
The 600128-1574 appears in older Joy continuous miner fleets. Confirm the application against your machine's parts book; we rewind to the nameplate rating of the motor you send.
Source: Rating: Davis Electric (Fairmont, WV) public Joy motor exchange inventory.
Scope of work
What we upgrade and what we never change
| What we upgrade | What we never change |
|---|---|
| Stator rewound with new form-wound coils | Explosion-proof enclosure |
| Class H insulation system | Flame-path surfaces and their dimensions |
| Varnish treatment with dehydration and controlled oven cure | Lead entrances |
| Bearing fits restored to ANSI/EASA AR100 tolerances | Mounting and shaft dimensions |
| New bearings, induction-mounted, and new seals | Nameplate rating: HP, voltage and speed stay as built |
| Rotor dynamically balanced | |
| Temperature sensors (RTDs) tested |
Enclosure dimensions are not modified. Before a rebuilt explosion-proof motor goes back underground, the mine's qualified electrical person inspects it, as MSHA regulations require.
Release tests
Which tests does every rewound motor pass?
| Test | Standard | Acceptance |
|---|---|---|
| Winding resistance, phase to phase | IEEE Std 1415 | Unbalance < 3% |
| Insulation resistance, 1 min | IEEE Std 43 | > 100 MΩ |
| Polarization index and dielectric absorption | IEEE Std 43 | PI > 2.0 · DAR > 1.5 |
| Step-voltage DC high-potential | IEEE Std 95 | > 100 MΩ, leakage < 1 mA |
| Surge comparison (turn-to-turn) | IEEE Std 522 | EAR L-L < 3% · P-P < 10% |
| Core loop test with thermography | Shop procedure | Uniform core temperature |
| Rotor growler test | Shop procedure | No open bars |
| Dynamic balance of rotor | ISO 21940 | Residual unbalance recorded |
| 60-minute run test: current, temperature, vibration | Shop procedure | Vibration < 0.11 in/s |
Other Joy cutter motors
Request for quotation
Send the nameplate and the failure
A photo of the nameplate and a line about the failure are enough to start. You get a technical answer first, then the quotation.
- Answered by an engineer, in English.
- Every motor returns with its recorded test data.
Or email ventas@temisa.mx or call +52 33 3614 2460 (Mexico, Central Time).