Biqu H2 V2S User guide

User Manual

Basic Parameters Product Dimensions

Extrusion Method: Dual Gear Extrusion

Maximum Printing Temperature: 270℃(upgradable to 500℃.)

Weight: 175g (including Heater Cartridge, Thermistor, and Fan.)

Maximum Extrusion Force: 7.5kg (depending on the filaments.)

Extrusion (based on the existing): 2700mm³/min
(depending on the filaments.)

E-step: 932/mm at 16 microstep (Further calibration
is recommended.)

Rotation distance: 3.433

Recommended Motor Current: 800mA

Gear Ratio: 7:1

Drive Gear Circumference: 24.5mm

Filament Diameter and Tolerance: 1.75 ± 0.05mm

H2 V2S Lite vs Other H2 Series
Products

Light weight as low as 175g;

Flowrate boosted from 15mm³/s to 45mm³/s;

The idler arm is made of 7075 T6 aluminum, with special

blend high-performance anti-wear MoS2 grease to improve

the quick release lever haptics and enhance wear resistance;

High performance thermal grease has been pre-applied to the

heat break to increase thermal conductivity between the heat

break and heatsink to improve cooling performance;

The filament drive gear is made of tool steel plated with

nano-coating to improve hardness, wear resistance, corrosion

resistance and provides longer life when printing abrasive

XYZ Dimensions(including the fan): 72.1 x 37.9 x 80.6mm

Thread of Nozzle/Heat Break: M4

Nozzle Diameter: Φ0.6mm

49.8

24.9

0.0

2.5

50.1

37.1

Leave clear for air flow

11.9

28.9

22.0

materials.

Thermistor Type: NTC100K

Note: Not compatible with standard NEMA14 motor.

35.0

25.0

10.0

0.0

5.8

30.8

Preferred
side
for mounting

More Guidance

It is recommended to install the fan toward the left; if toward the
right, pay attention to the gear and air vent. There are 10pcs M3
screw holes on the extruder for fixing.

The M3X8 screws provided are suitable for mounting plates with
a thickness of 3~5mm.

49.8

35.0

26.1

11.1

0.0

5.8

0.0

6.5

3.5

10-M3

6.4

30.8

21.5

31.5

Please assemble the hotend with the following steps:

1. Insert the heater cartridge into the heater block;

2. Install the heat break;

3. Place the thermistor head into the designated spot on the
side of the heater block(preferably pack the spot full of thermal
grease, standard thermal grease for PC cooling purposes
should suffice)and clamp down the thermistor wire with the
included M2 screw and washer;

4. Wrap the heater block with the included PTFE tape at least 3
times for optimal thermal insulation(To achieve the ultimate
lightweight and smallest dimension, the thermistor screw and
washer can be neglected, fix the thermistor in place with only
PTFE tape);

5. Install the nozzle(the nozzle should be hot tightened again
after the heater block has been heated to printing temperature).

①Heat Break
②Heater Cartridge
③M2x3 Screw
④Washer
⑤Thermistor

1

2

5

4

3

About Filament Tension and
Filament Release

Drive gear tension is adjustable to accommodate different
material filament, turn the Tensioner Screw counterclockwise to
increase pressure, clockwise to decrease pressure(when the
screw stops turning, Do not force it or you will damage the
extruder.)

To release the filament, pull the lever towards the position of ②
in the picture below.

1

Tightening

Maximum Operating Temperature

●Fan: 50℃

●Motor: 130℃

●Heater Break: H2 bi-metal (copper alloy + grade5 titanium

alloy), 500℃ compatibility.

●Bearing: 100℃

Note: it is the maximum working temperature of a single part, not
of the whole system.

Heater Cartridge Specifications

●Head Size: 6 x 20mm

●Voltage: 24V

●Power: 70W

Fan Specifications

SpecificationsItem

Size

Cable

Voltage

Speed

Terminal Model

35 x 35 x 10mm

150mm

24V

9000±10%

XH2.54

Motor Specifications Product Overview

Rated Voltage

Rated Current

Phase

Winding DC Resistance (25℃)

Winding Inductance

Holding Torque

Positioning Torque

Insulation Resistance

Insulation Level

Moment of Inertia

A

C

Winding
arrangement

SpecificationsItem

DC 3.45V

DC 1.5A/phase

2

2.3X (1±10%)Ω

2.0X (1±20%) mH

≥110mN·m

7mN·mREF

≥100MΩ (DC 500V)

Class B

8g·cm³

123456

C

B

A

D

Connector
Pinout

25

24

21

23

19

18

17

22

20

12

11

10

16

15

14

13

9

8

7

6

4

3

2

1

1.Motor

2.Gearbox

3.682XZZ Bearing

4.673ZZ Bearing

5.M3X4 Socket Head Screw

6.Pinion Gear

7.Spur Gear

8.Output Gear

9.Tensioner Screw

10. M2.5 Nut

11. Spring

12. Gear Carrier

13. Filament Release Lever

14. Roller Bearing

15. Idler Gear

16. Set Screw

17. Pin

18. Heat Sink

19. M3x4 Socket Head Screw

20. M4 Heat Break

21. Heater Block

22. Brass Nozzle

23. M3x33 Aluminium Alloy

Socket Head Screw

24. 3510 Fan

25. M3x16 Aluminium Alloy

Socket Head Screw

5