CHCNAV MCNAV TX73

3D machinecontrol.

Model-driven excavation with a 10.1-inch CAD display, dual GNSS and a 100 Hz IMU. The bucket follows the drawing — 1 cm horizontal, 1.5 cm vertical.

1 cm H / 1.5 cm V10.1" Android 14iSite cloudEngcon / Steelwrist

Request a demo Compare with 2.5D

What it does

The drawing, in the cab

TX73 turns your design model into live bucket guidance — from highways and slopes to foundations and trenches.

Real-time 3D guidance

Bucket-tip position computed live against the design model, so the operator digs the drawing — not a guess.

Advanced CAD engine

Opens LandXML, DWG and DXF directly, plus .dc, .cal, .jxl, .lok and .loc coordinate files.

Color cut/fill maps

2D and 3D views with color-coded cut/fill and customizable operator shortcuts on a 1920×1200 display.

iSite cloud

Over-the-air updates, remote troubleshooting and data synchronization keep downtime near zero.

Tiltrotator ready

Automated tilt control for Engcon and Steelwrist tilt-rotators, tilt buckets and standard buckets.

Precision stack

MC300 GNSS at 8 mm + 1 ppm horizontal, IS300 100 Hz IMU at ±0.05°, dual IP68 AT315 antennas.

Deciding

2.5D or 3D?

Both retrofit to your fleet. The question is whether your jobsites hand you design models.

System	EasyNAV EMG100 · 2.5D	MCNAV TX73 · 3D
Guidance	Depth & slope from a field reference	Full 3D model in the cab
Design files	Not required — field-defined	DWG · DXF · LandXML · .jxl/.cal
Accuracy	±3 cm	1 cm H / 1.5 cm V
Display	10.1" · 1024×600	10.1" · 1920×1200 · Android 14
Cloud	—	iSite cloud · OTA · remote support
Attachments	Tilt buckets · swing/triple/offset booms	+ Engcon & Steelwrist tilt-rotators
Best for	Trenching, utilities, slope trimming	Roads, foundations, mass excavation

Try the HUD

Model guidance, simulated

Switch to 3D mode to see the live cut/fill map TX73 renders from your design model.

Grade simulatorSimulated data

OVER-CUT 12 CM

Bucket elev

99.88 m

Delta

-12 cm

Cut / fill map — 3D model

Cut On grade Fill

Bucket vs grade±60 cm

43.26512000, -2.93500200 · 12 SATRTK FIX

Technical

Specifications

System accuracy1 cm horizontal / 1.5 cm vertical (manufacturer rating)

MC300 GNSS receiverRTK 8 mm + 1 ppm H · 15 mm + 1 ppm V · IP67

IS300 IMU sensor100 Hz · ±0.05° static / ±0.1° dynamic · IP69K

AT315 antennasDual GNSS · IP68

MCPad300 display10.1" · 1920×1200 · Android 14 · 8-core 2.2 GHz · 6 GB / 64 GB · IP67

Connectivity4G LTE · Wi-Fi · Bluetooth · 410–470 MHz radio modem · CAN · RS232

Design formatsLandXML · DWG · DXF · .dc · .cal · .jxl · .lok · .loc

CompatibilityStandard buckets · tilt buckets · Engcon & Steelwrist tilt-rotators

Get it on your machine

Request a TX73 demo

Bring us a design file and a machine — we'll show you the bucket following the model.