Push Force and Resolution
The Bondtech QR-M brings the same record level of torque and resolution as the Bondtech QR.
To Fit Mosquito® Hotends
The QR-M extruder is the perfect match for big printers to fit Mosquito® Hotends on direct extruder applications. This extruder is compatible with:
- The Mosquito® Hotend
- Mosquito® Magnum Hotend
- Mosquito® Liquid Hotend
- Mosquito® Magnum+™ Hotend
See the QR-M and Mosquito® Magnum+™ in action in this YouTube video from Ivan Miranda:
The QR-M Extruder comes in 4 different configurations to accommodate Standard (right-handed) and Mirrored (left-handed) orientations and provides the option for 1.75 mm and 2.85/3.00 mm filament diameters.
The housing parts are professionally SLS printed in nylon for maximum strength and precision. Also, a 700 mm cable with JST-PH6 to PC2510 quick-connectors is included.
The Bondtech QR-M utilizes a Nema17 stepper motor with an integrated planetary gear reducer with a 5:1 gear ratio. By combining these features with precision CNC-machined hardened steel drive gears, the QR-M Extruder gives you a compact powerhouse for all your applications. Whether you require high-resolution prints with small nozzles or high-flow prints with big nozzles, the optimized gearing ratio, combined with Bondtech's industry-leading drive gears, provides unparalleled pushing power and lightning-fast retractions in a lightweight and compact package.
Bondtech's unique Dual-Drive technology delivers uninterrupted material flow without fear of grinding or slipping in even the most demanding conditions. Bondtech users all over the world will attest that even in prints with thousands of retractions, Bondtech extruders perform flawlessly with unmatched precision and zero damage or degradation to the filament.
The QR-M extruder feeds all material with high reliability from slippery nylons and soft TPU/TPE filaments to highly rigid and sometimes brittle carbon-filled high-strength materials. The extruder is designed for 1.75 or 2.85/3.00 mm filaments, but has been tested to ensure the performance of filament with a widespread diameter for high reliability regardless of the tolerance of the filament used. The filament path is fully guided throughout the extruder body and the housing maintains tight tolerances to the drive gears mitigating the chances of filament misfeed when the hotend experiences increased backpressure or highly flexible filaments are used.
The thumbscrew tensioner allows you to fine-tune the pressure exerted by the drive gears onto the filament. This gives you the power to adjust the pressure according to your preferences and to optimize for the type of material you are using.
To be able to do material changes in a snap, simply activate the Quick-Release lever to release the tension and pull the material to be changed out of the extruder. While keeping the lever activated, insert the new material.
The QR-M feeds material with equal force in both directions so it's flexible when it comes to integrating with your application.
Each unit comes assembled, tested, and verified for optimal performance. Recommended motor current setting: 1.2A
E-steps setting: 476.5 (1.75mm) (492.45 2.85 mm) steps/mm
This extruder does not come with a mount. A printable mount is available here. In most instances, custom mounts will be required. If using the available printer mount, you will need QTY:2 M5x10 low-head socket screws and M5 threaded inserts.
Important Notice Regarding e-steps
The value for the e-steps presented above is the most common scenario:
1.8°/step motors and 16 bit micro-stepping
The e-steps Depend On:
- The stepper motor angle per step: The most common is 1.8°. However, some printers use other kinds.
- The mainboard micro-stepping setting: The most common is 16 bit. However, some boards may use other bit settings.
There is a directly proportional relationship with micro-stepping bits:
If the micro-stepping is doubled, eg. 32bit, also double the e-steps value.
There is an inversely proportional relationship with angle per step:
If the stepper motor angle per step is halved, eg. 0.9, double the e-steps value.
Download QR Datasheet
Download Stepper Motor Datasheet