Product Overview
This vertically oriented disc grinder is purpose‑built for mini excavators and confined sites where a drum‑style grinder may have difficulty accessing. It spins a carbide‑toothed disc at 800‑1300 RPM, working from the top down with a narrow footprint suited to backyards, fence lines, and foundation perimeters. Weighing only 180‑192 kg, it pairs well with 1.5‑ton machines and is suited for residential tree work and light municipal or utility maintenance where compact access is required. Two models – TG‑DSG360 and TG‑DSG450 – cover 1.5–7 ton excavators, with disc diameters of 360 and 470 mm, effective cutting diameters of 445 and 545 mm, and max cutting depths of 135 and 190 mm. Hydraulic flow requirements range from 30 to 70 L/min, depending on the model and the excavator auxiliary circuit. The attachment runs off the carrier's auxiliary hydraulics, so the same carrier can be used for stump grinding and other compatible site-work tasks.
Disc Grinding System and Design
A high‑speed hydraulic motor spins the disc at 800‑1300 RPM, delivering effective surface speed for carbide tooth cutting. The motor mounts via a heavy flange with a mechanical seal to keep contaminants out, and runs on 30‑70 L/min flows suited to compact carriers. The disc is high‑strength steel with a precision hub; carbide teeth are bolted or welded around the perimeter in a balanced pattern for smooth operation. The shroud contains chips and deflects them downward, protecting the operator and surroundings. Built from heavy‑gauge steel with reinforced wear zones, it holds up to repeated use. The vertical, slender profile can access areas that may be difficult to reach with a drum-style grinder, and the relatively low operating weight is suited to compact excavator applications.
Models and Specifications
Two models cover excavators from 1.5 to 7 tons. All specifications include both metric and imperial units where applicable.
| Parameter | TG-DSG360 | TG-DSG450 |
|---|---|---|
| Compatible Excavator Class | 1.5–5 t (1.65–5.5 ton) | 3–7 t (3.3–7.7 ton) |
| Cutting Wheel Diameter | 360 mm (14.2 in) | 470 mm (18.5 in) |
| Max Effective Cutting Diameter | 445 mm (17.5 in) | 545 mm (21.5 in) |
| Required Hydraulic Flow | 30–50 L/min (7.9–13.2 GPM) | 45–70 L/min (11.9–18.5 GPM) |
| Max Cutting Depth | 135 mm (5.3 in) | 190 mm (7.5 in) |
| Working RPM | 800–1300 RPM | 800–1300 RPM |
| Operating Weight | 180 kg (397 lb) | 192 kg (423 lb) |
Table data for reference only. Final specs depend on configuration. Contact TianGe for details.
Application Matching by Size
Compact Mini Excavators (1.5–5 t)
The TG‑DSG360 is made for the smallest machines. With a 360 mm disc, 135 mm max cutting depth, and 180 kg weight, it suits confined residential yards, narrow fence lines, and foundation perimeters. The TG‑DSG360 requires 30–50 L/min of auxiliary flow; confirm the carrier's available flow before ordering. The maximum effective cutting diameter is 445 mm. Suitable stump size varies with geometry, wood density, and the grinding approach used; larger stumps can be reduced by working from the edges inward. Ideal for tight residential jobs where machine footprint and transport size are limited.
Mid‑Size Compact Excavators (3–7 t)
The TG‑DSG450 steps up capacity for 3‑7 ton machines: 470 mm disc, 190 mm max cutting depth, 192 kg. Its maximum effective cutting diameter is 545 mm and max cutting depth is 190 mm, providing deeper below-grade removal. Appropriate stump dimensions vary with wood density, stump shape, and grinding method. Flow requirement is 45‑70 L/min, matching common 3‑7 ton auxiliary circuits. Used by site contractors and parks departments that need grading, tree work, and grinding on one carrier. It retains the compact-access advantage of the disc design.
Installation and Mounting
Mounting is straightforward on compact carriers. The grinder replaces the bucket via a custom bracket built to your excavator's pin spacing, pin diameter, and stick width — on mini excavators, the compact bracket keeps the attachment close to the stick for better stability. At order, share your excavator make and model, pin dimensions, and available auxiliary flow and pressure. Quick‑coupler options are available. Pin the bracket, connect hoses (pressure, return, and case drain if required) to the auxiliary circuit, and route with enough slack for full boom articulation — on compact machines, hose clearance along the stick is particularly important. Before first use, set auxiliary flow to the specified range (30‑50 L/min for TG‑DSG360; 45‑70 L/min for TG‑DSG450), verify disc rotation direction, grease bearings, inspect teeth, and spin the disc by hand to confirm free movement and balance.
Maintenance and Wear Parts
Carbide teeth are the main wear item — inspect daily and replace any chipped, worn, or missing. Because the disc runs at 800‑1300 RPM, a missing or broken tooth causes imbalance and vibration, so replace before continuing operation. Bolted or welded holders allow easy field replacement. Grease disc bearings every 8‑16 hours. Check motor shaft seal, hoses, and housing for damage. Inspect the disc hub and frame for cracks, especially near the disc opening — have structural issues repaired by a qualified fabricator. Replace hoses at signs of abrasion. Genuine wear parts — teeth, holders, bearings, seals, hoses, and pins — are available from TGEC. Keeping spare teeth and hoses on hand minimizes downtime.
Request a Quote — Disc Stump Grinder
Tell us your excavator make/model, weight, hydraulic flow, preferred model (TG‑DSG360 or TG‑DSG450), primary application, typical stump size, mounting type, and quantity. We'll confirm the right model, verify compatibility, supply the correct bracket and wear parts, and send a detailed quote. Dealers, OEMs, and municipal fleets welcome for volume and private‑label orders.
