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JST JGD-125C Water Cooled Spindle: Difference between revisions

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updated O-ring information
 
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A 5.5kW / 6kW Chinese water cooled spindle with an ER25 collet chuck. It is marketed for stone engraving rather than CNC routing.
A 5.5kW / 6kW Chinese water cooled spindle with an ER25 collet chuck. It is marketed for stone engraving rather than CNC routing.
== Wiring ==
Power inlet "WEIPU WS20" circular connector wiring:
{| class="wikitable"
! Pin
! Wire Color
|-
| 1
| yellow
|-
| 2
| blue
|-
| 3
| red
|-
| 4
| (ground)
|}
The spindle has male pins inside an externally threaded receptacle.


== Replacement Parts ==
== Replacement Parts ==
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<pre>SKF E2 6004-2Z/C3 15 260 K</pre>
<pre>SKF E2 6004-2Z/C3 15 260 K</pre>
=== Bottom Locknut ===
Doubles as a dust shield:
* 56.7mm OD
* 5.1mm thick (dust shield portion)
* 4x 3.5mm holes 3mm deep on a 44mm diameter circle
* must get past a 33.3mm diameter spindle nose before threading into place
=== Top Locknut ===
* 32mm overall OD
* 10mm thick
* M20x1.0mm threads on the ID
* 26mm OD / 22mm ID rim for bearing's inner shield
* 1.8mm clearance around the rim for the bearing's shield, as well as a shoulder with no threads on the inside


=== O-rings ===
=== 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?:
The top cap with the water inlets have 10mm OD 1mm deep recesses with a 6mm ID hole for O-rings. Maybe for 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/1171N144/ Square-Profile Oil-Resistant Buna-N O-Ring, 1.5 mm Wide, 7 mm ID | McMaster-Carr]
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* [https://www.mcmaster.com/1302N037/ Oil-Resistant Buna-N O-Ring, 1.8 mm Wide, 6 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]
* [https://www.mcmaster.com/9262K166/ Oil-Resistant Buna-N O-Ring, 2 mm Wide, 6 mm ID | McMaster-Carr]
The bearing housing portion of the spindle has 8mm OD 1mm deep recesses with 4mm ID holes for O-rings. Maybe for one of these?:
* [https://www.mcmaster.com/9262K627/ Oil-Resistant Buna-N O-Ring, 1.5 mm Wide, 4.5 mm ID | McMaster-Carr]
* [https://www.mcmaster.com/9262K163/ Oil-Resistant Buna-N O-Ring, 2 mm Wide, 4 mm ID | McMaster-Carr] (verified)


=== Fasteners ===
=== Fasteners ===
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4x [https://www.mcmaster.com/91290A228/ Alloy Steel Socket Head Screw, Black-Oxide, M5 x 0.8 mm Thread, 12 mm Long | McMaster-Carr]
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 ===
==== Upper Rotor Bore Cover ====


For holding a lid over the upper part of the rotor to protect the floating bearings from contamination:
For holding a lid over the upper part of the rotor to protect the floating bearings from contamination:
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3x [https://www.mcmaster.com/91290A148/ Alloy Steel Socket Head Screw, Black-Oxide, M4 x 0.7 mm Thread, 12 mm Long | McMaster-Carr]
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 ===
==== Spindle Top Cap ====


For holding the water inlet/electrical inlet cap onto the main spindle body:
For holding the water inlet/electrical inlet cap onto the main spindle body:
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