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You may find the assembly data sheet useful during assembly.

Contents 1 Motor bracket 1.1 BOM 1.2 Printed parts 1.3 Assembly 2 Idler bracket 2.1 BOM 2.2 Printed parts 2.3 Assembly 3 Y bearing 360 3.1 BOM 3.2 Printed parts 3.3 Assembly 4 Y bearing 180 4.1 BOM 4.2 Printed parts 4.3 Assembly 5 Chassis 5.1 BOM 5.2 Printed parts 5.3 Assembly

Motor bracket

BOM

Total # of assemblies: 1

Name	Qty/assembly	Total Qty	Type
drive-pulley_3off.par	1	1	RP
y-motor-bracket_1off.par	1	1	RP
opto-endstop-v2-1-pcb.par	1	1	PCB
m3-capx20.par	5	5	Fastener
m3-nut.par	2	2	Fastener
m3-nylock.par	1	1	Fastener
m3-washer.par	8	8	Fastener
624-bearing.par	2	2	Bearing
m4-nylock.par	2	2	Fastener
m4-washer.par	6	6	Fastener
m4x40-cap.par	2	2	Fastener
m5-mudguard-washer.par	2	2	Fastener
stepper-motor-nema17-fl42sth47-1684A-01.par	1	1	Motor

Printed parts

Assembly

Optoswitch pcb is spaced with two M3 nuts.

Idler bracket

BOM

Total # of assemblies: 1

Name	Qty/assembly	Total Qty	Type
y-idler-bracket_1off.par	1	1	RP
624-bearing.par	2	2	Bearing
m4-nylock.par	2	2	Fastener
m4-washer.par	6	6	Fastener
m4x40-cap.par	2	2	Fastener
m5-mudguard-washer.par	2	2	Fastener

Printed parts

Assembly

Y bearing 360

Two pairs needed, one with a ‘left’ outer and the other with a ‘right’ outer.

BOM

Total # of assemblies: 2

Name	Qty/assembly	Total Qty	Type
y-bearing-360-inner_2off.par	1	2	RP
y-bearing-360-outer-_1off.par	1	2	RP
624-bearing.par	4	8	Bearing
m4-nylock.par	6	12	Fastener
m4-washer.par	26	52	Fastener
m4x40-cap.par	6	12	Fastener

Printed parts

Assembly

Before this assembly it's important to understand the key mechanical concepts of how the axes work. If you haven't already, check this video out:

Once assembled, clamp the ‘A’ and ‘B’ bolts tight. Set the 360° fit by inserting a ø8 mm bar (e.g. Y bar) into the bearing assembly. Initially, there should be about a half-mm gap between it and the bottom two bearings when the bar is running on the top two. If this is tight, add extra washers either side of the top two bearings; if it is too lose take some away.

Tighten/slacken the two lower adjuster bolts (‘C’) until all the bearings just touch the rod and smooth running is achieved. Ensure all bearings rotate when the bar is slid up and down.

Y bearing 180

Two pairs needed, one with a ‘left’ outer and the other with a ‘right’ outer.

BOM

Total # of assemblies: 2

Name	Qty/assembly	Total Qty	Type
y-bearing-180-inner_2off.par	1	2	RP
y-bearing-180-outer-_1off.par	1	2	RP
624-bearing.par	2	4	Bearing
m4-nylock.par	2	4	Fastener
m4-washer.par	24	48	Fastener
m4x40-cap.par	2	4	Fastener

Printed parts

Assembly

5 washer stack either side of bearing. Once assembled, insert a ø 8 mm bar in between the bearings and clamp the slotted bolt to achieve a smooth run. Ensure all bearings rotate when the bar is slid up and down.

Chassis

BOM

Total # of assemblies: 1

Name	Qty/assembly	Total Qty	Type
purge-plate.par	1	1	Sheet Image DXF
y-chassis.par	1	1	Sheet Image DXF
y-flag.par	1	1	Thin sheet
y-belt-clamp_2off.par	2	2	RP
y-bearing-180-left.asm	1	1	Assembly
y-bearing-180-right.asm	1	1	Assembly
y-bearing-360-left.asm	1	1	Assembly
y-bearing-360-right.asm	1	1	Assembly
m3-capx20.par	4	4	Fastener
m3-nut.par	4	4	Fastener
m3-washer.par	4	4	Fastener
m4-nylock.par	20	20	Fastener
m4-washer.par	40	40	Fastener
m4x16-cap.par	4	4	Fastener
m4x40-cap.par	16	16	Fastener

Printed parts

Assembly

Ensure all bolt heads sit on the underside of the chassis and bolt shanks point up. This guarantees that the chassis assembly will not collide with any of the frame structure it moves in.

Put the Y-axis ground rods through the bearings before tightening them. This ensures everything is aligned.

Bed will be attached later.

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