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JST JGD-125C Water Cooled Spindle (view source)
Revision as of 23:40, 15 April 2022
, 23:40, 15 April 2022initial page creation
== Overview ==
A 5.5kW / 6kW Chinese water cooled spindle with an ER25 collet chuck. It is marketed for stone engraving rather than CNC routing.
== Replacement Parts ==
=== Angular Contact Bearings ===
<pre>7007C T 2RZ HQ1 P4 DBL Z3X 131018044B</pre>
=== Deep Groove Bearings ===
<pre>SKF E2 6004-2Z/C3 15 260 K</pre>
=== O-rings ===
Must fit within a 10mm OD 1mm deep recess with a 6mm ID hole for water to pass through. Maybe one of these?:
* [https://www.mcmaster.com/1171N144/ Square-Profile Oil-Resistant Buna-N O-Ring, 1.5 mm Wide, 7 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/1171N181/ Square-Profile Oil-Resistant Buna-N O-Ring, 2 mm Wide, 6 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/9262K628/ Oil-Resistant Buna-N O-Ring, 1.5 mm Wide, 6.5 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/9262K595/ Oil-Resistant Buna-N O-Ring, 1.78 mm Wide, 6.35 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/1302N037/ Oil-Resistant Buna-N O-Ring, 1.8 mm Wide, 6 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/9262K166/ Oil-Resistant Buna-N O-Ring, 2 mm Wide, 6 mm ID | McMaster-Carr]
=== Fasteners ===
==== Dust Shield ====
For holding the dust shield to the lower angular contact bearing retaining ring:
4x [https://www.mcmaster.com/91290a140/ Alloy Steel Socket Head Screw, Black-Oxide, M4 x 0.7 mm Thread, 8 mm Long | McMaster-Carr]
==== Lower Angular Contact Bearing Retaining Ring ====
For holding the lower angular contact bearing retaining ring to the bearing housing:
4x [https://www.mcmaster.com/91290A148/ Alloy Steel Socket Head Screw, Black-Oxide, M4 x 0.7 mm Thread, 12 mm Long | McMaster-Carr]
There are two M4-0.7 tapped holes 9.5mm deep for jacking the ring away from the housing, we used 25mm long screws.
==== Bearing Housing ====
Grub screws w/ teflon tape for sealing some water ports (manufacturing process side effect?):
2x [https://www.mcmaster.com/91210A310/ Alloy Steel Cone-Point Set Screw, M6 x 1 mm Thread, 8 mm Long | McMaster-Carr]
TODO verify the following:
For holding the bearing housing to the main spindle body:
6x [https://www.mcmaster.com/91290A232/ Alloy Steel Socket Head Screw, Black-Oxide, M5 x 0.8 mm Thread, 16 mm Long | McMaster-Carr]
==== Upper Angular Contact Bearing Retaining Ring ====
For holding the upper angular contact bearing retaining ring onto the housing:
4x [https://www.mcmaster.com/91290A228/ Alloy Steel Socket Head Screw, Black-Oxide, M5 x 0.8 mm Thread, 12 mm Long | McMaster-Carr]
=== Upper Rotor Bore Cover ===
For holding a lid over the upper part of the rotor to protect the floating bearings from contamination:
3x [https://www.mcmaster.com/91290A148/ Alloy Steel Socket Head Screw, Black-Oxide, M4 x 0.7 mm Thread, 12 mm Long | McMaster-Carr]
=== Spindle Top Cap ===
For holding the water inlet/electrical inlet cap onto the main spindle body:
6x [https://www.mcmaster.com/91290A256/ Alloy Steel Socket Head Screw, Black-Oxide, M5 x 0.8mm Thread, 35mm Long, Partially Threaded | McMaster-Carr]
TODO military connector screws?
== Online Resources ==
[https://www.aliexpress.com/item/1005001993140654.html JGD 125C Spindle Motor 5.5 KW ER25 Stone Water Cooling Cnc Milling Machine Spindle 380v / 220v 4pcs Bearing High Speed|Machine Tool Spindle| - AliExpress]
A 5.5kW / 6kW Chinese water cooled spindle with an ER25 collet chuck. It is marketed for stone engraving rather than CNC routing.
== Replacement Parts ==
=== Angular Contact Bearings ===
<pre>7007C T 2RZ HQ1 P4 DBL Z3X 131018044B</pre>
=== Deep Groove Bearings ===
<pre>SKF E2 6004-2Z/C3 15 260 K</pre>
=== O-rings ===
Must fit within a 10mm OD 1mm deep recess with a 6mm ID hole for water to pass through. Maybe one of these?:
* [https://www.mcmaster.com/1171N144/ Square-Profile Oil-Resistant Buna-N O-Ring, 1.5 mm Wide, 7 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/1171N181/ Square-Profile Oil-Resistant Buna-N O-Ring, 2 mm Wide, 6 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/9262K628/ Oil-Resistant Buna-N O-Ring, 1.5 mm Wide, 6.5 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/9262K595/ Oil-Resistant Buna-N O-Ring, 1.78 mm Wide, 6.35 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/1302N037/ Oil-Resistant Buna-N O-Ring, 1.8 mm Wide, 6 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/9262K166/ Oil-Resistant Buna-N O-Ring, 2 mm Wide, 6 mm ID | McMaster-Carr]
=== Fasteners ===
==== Dust Shield ====
For holding the dust shield to the lower angular contact bearing retaining ring:
4x [https://www.mcmaster.com/91290a140/ Alloy Steel Socket Head Screw, Black-Oxide, M4 x 0.7 mm Thread, 8 mm Long | McMaster-Carr]
==== Lower Angular Contact Bearing Retaining Ring ====
For holding the lower angular contact bearing retaining ring to the bearing housing:
4x [https://www.mcmaster.com/91290A148/ Alloy Steel Socket Head Screw, Black-Oxide, M4 x 0.7 mm Thread, 12 mm Long | McMaster-Carr]
There are two M4-0.7 tapped holes 9.5mm deep for jacking the ring away from the housing, we used 25mm long screws.
==== Bearing Housing ====
Grub screws w/ teflon tape for sealing some water ports (manufacturing process side effect?):
2x [https://www.mcmaster.com/91210A310/ Alloy Steel Cone-Point Set Screw, M6 x 1 mm Thread, 8 mm Long | McMaster-Carr]
TODO verify the following:
For holding the bearing housing to the main spindle body:
6x [https://www.mcmaster.com/91290A232/ Alloy Steel Socket Head Screw, Black-Oxide, M5 x 0.8 mm Thread, 16 mm Long | McMaster-Carr]
==== Upper Angular Contact Bearing Retaining Ring ====
For holding the upper angular contact bearing retaining ring onto the housing:
4x [https://www.mcmaster.com/91290A228/ Alloy Steel Socket Head Screw, Black-Oxide, M5 x 0.8 mm Thread, 12 mm Long | McMaster-Carr]
=== Upper Rotor Bore Cover ===
For holding a lid over the upper part of the rotor to protect the floating bearings from contamination:
3x [https://www.mcmaster.com/91290A148/ Alloy Steel Socket Head Screw, Black-Oxide, M4 x 0.7 mm Thread, 12 mm Long | McMaster-Carr]
=== Spindle Top Cap ===
For holding the water inlet/electrical inlet cap onto the main spindle body:
6x [https://www.mcmaster.com/91290A256/ Alloy Steel Socket Head Screw, Black-Oxide, M5 x 0.8mm Thread, 35mm Long, Partially Threaded | McMaster-Carr]
TODO military connector screws?
== Online Resources ==
[https://www.aliexpress.com/item/1005001993140654.html JGD 125C Spindle Motor 5.5 KW ER25 Stone Water Cooling Cnc Milling Machine Spindle 380v / 220v 4pcs Bearing High Speed|Machine Tool Spindle| - AliExpress]