EShapeoko 1.0 and 1.1 NEMA23 upgrades

These are the lists of parts for the NEMA23 upgrades.

An upgrade purchased with a kit will remove the items with negative quantities from the kit (they are used only for NEMA23 motors). An upgrade kit bought separately is necessarily more expensive, because there are no savings from removing unused parts from the kit.

X Axis NEMA23 Upgrade

Count	Part Number	Part Description	Material	Notes
Custom laser-cut parts
+2	EM-LBA1	Belt-on-the-outside belt anchor	2mm stainless steel	Note 2
Linear motion components
−1	EM-BP5	18-tooth MXL pulley 5mm bore	aluminium, polycarbonate
+1	EM-BP6	18-tooth MXL pulley 6.35mm bore	aluminium, polycarbonate
Spacers
+4	EM-D5-02a	M5 3.18mm spacer (thick)	nylon
+4	EM-D5-16a	M5 25.4mm spacer (thick)	nylon	Note 2
Fasteners
−4	EM-W3	M3 washer (form A)	stainless steel
−4	EM-S3-6	M3 6mm cap screw	stainless steel
+4	EM-N5	M5 hex nut	stainless steel
+8	EM-W5	M5 washer (form A)	stainless steel
+4	EM-S5-18	M5 18mm cap screw	stainless steel
+2	EM-S5-30F	M5 30mm flanged screw	stainless steel	Note 1
+4	EM-S5-40	M5 40mm cap screw	stainless steel	Note 2

Note 1: If assembled with the short 18 mm screws and the short 3.18 mm spacers, the NEMA23 motor will not clear the heads of the belt idler bolts. Use the S5-30F flanged screws for the idlers instead of the S5-30 cap screws. Do not use a washer on the motor side of the plate. This configuration is more compact, but it may give unsatisfactory contact between the belt and the belt pulley. A future version of the motor plate will have a second NEMA23 hole pattern, higher up for improved belt contact.

Note 2: The kit includes parts for an alternate configuration that fixes the issue above. Use the long 40 mm screws and the long 25.4 mm spacers to mount the motor. Run the belt on the outside, like on the Y axis. Install the LBA1 belt anchors instead of the LBA parts. Mount the idlers on the back of the rear X plate, in the lower two holes. Use the lower of the two slots in the belt anchors, with the belt tensioner upside down (screw at the bottom). This configuration gives the best contact between the belt and the pulley.

More configurations are possible. For instance, the belt idler wheels can be placed on the bottom two screws attaching the NEMA23 motor to the plate; this requires a different set of spacers (not supplied). The belt goes in the top slot of the LBA1 anchors.

Y Axis NEMA23 Upgrade

The part counts are for two Y motors.

Count	Part Number	Part Description	Material	Notes
Linear motion components
−2	EM-BP5	18-tooth MXL pulley 5mm bore	aluminium, polycarbonate
+2	EM-BP6	18-tooth MXL pulley 6.35mm bore	aluminium, polycarbonate
Spacers
−8	EM-D3-15	M3 23.81mm spacer	nylon
+8	EM-D5-16a	M5 25.4mm spacer (thick)	nylon
Fasteners
−8	EM-W3	M3 washer (form A)	stainless steel
−8	EM-S3-30	M3 30mm cap screw	stainless steel
+8	EM-N5	M5 hex nut	stainless steel
+16	EM-W5	M5 washer (form A)	stainless steel
+8	EM-S5-40	M5 40mm cap screw	stainless steel

Assembly is identical to the NEMA17 case. Please follow those instructions.

Z Axis NEMA23 Upgrade

Count	Part Number	Part Description	Material	Notes
Custom laser-cut parts
−2	EM-LZP	Z motor mount plate	2mm stainless steel
+2	EM-LZP1	Z NEMA23 motor mount plate	2mm stainless steel
Linear motion components
−1	EM-FC5-8	5mm to 8mm flexible coupler	aluminium, steel
+1	EM-FC6-8	6.35mm to 8mm flexible coupler	aluminium, steel
Spacers
−9	EM-W3N	M3 1.58mm washer	nylon
+3	EM-W5N	M5 1.58mm washer	nylon
−6	EM-D3-12	M3 19.05mm spacer	nylon
+3	EM-D5-12a	M5 19.05mm spacer (thick)	nylon
+3	EM-D5-16a	M5 25.4mm spacer (thick)	nylon
Fasteners
−3	EM-W3	M3 washer (form A)	stainless steel
−3	EM-S3-50	M3 50mm cap screw	stainless steel
+3	EM-N5	M5 hex nut	stainless steel
+6	EM-W5	M5 washer (form A)	stainless steel
+3	EM-S5-70	M5 70mm cap screw	stainless steel

The assembly is practically the same as the NEMA17 version. Use one of each kind of spacer on each long screw.