Product Overview
This drum‑style hydraulic grinder mounts on the excavator boom and runs off the auxiliary circuit. It grinds stumps below grade so the area can be backfilled and restored immediately. Unlike shears or pullers, it reduces the stump to chips, reducing the need for stump removal and haul-away. Three models (TG‑SG04, TG‑SG06, TG‑SG08) cover 1.5–30 ton carriers, with cutting diameters of 400, 600, and 850 mm, and max depths from 590 to 900 mm. Torque ranges from 13,700 to 43,000 Nm across the three models. It is commonly used by tree services, landscapers, and municipal crews. For other removal methods, see the excavator stump removal attachments lineup, including the excavator stump shear and excavator stump puller.
Grinding System and Drum Design
The grinder features a low‑speed, high‑torque piston motor with a mechanical seal to keep out debris. The drum is made of high‑strength steel with greaseable bearings and carbide teeth in bolt‑on or weld‑on holders, arranged for smooth, balanced cutting. The shroud contains chips and directs them downward, protecting the operator and machine. The housing is heavy‑gauge steel with reinforced wear zones.
Models and Specifications
Three models cover excavators from 1.5 to 30 tons. All specs include metric and imperial units.
| Parameter | TG-SG04 | TG-SG06 | TG-SG08 |
|---|---|---|---|
| Compatible Excavator Class | 1.5–5 t (1.65–5.5 ton) | 6–14 t (6.6–15.4 ton) | 14–30 t (15.4–33 ton) |
| Cutting Diameter | 400 mm (15.7 in) | 600 mm (23.6 in) | 850 mm (33.5 in) |
| Max. Grinding Depth | 590 mm (23.2 in) | 700 mm (27.6 in) | 900 mm (35.4 in) |
| Operating Weight | 195 kg (430 lb) | 285 kg (628 lb) | 575 kg (1,268 lb) |
| Working Pressure | 110–250 bar (1,595–3,625 psi) | 150–250 bar (2,175–3,625 psi) | 180–350 bar (2,610–5,075 psi) |
| Hydraulic Flow | 30–130 L/min (7.9–34.3 GPM) | 65–150 L/min (17.2–39.6 GPM) | 110–220 L/min (29.1–58.1 GPM) |
| 1st Gear Torque | 13,700 Nm (10,107 ft-lb) | 16,900 Nm (12,466 ft-lb) | 43,000 Nm (31,715 ft-lb) |
Table data for reference only. Final specs depend on configuration. Contact TianGe for details.
Application Matching by Size
Compact Excavators (1.5–5 t)
The TG‑SG04 (400 mm cutting diameter, 590 mm max depth, 195 kg) is built for mini excavators. Ideal for residential lots, property perimeters, and utility corridors. Its 30–130 L/min flow range matches compact machine auxiliaries. The cutting diameter is 400 mm. Workable stump size varies with geometry, density, and grinding approach; larger stumps can be reduced by grinding from the edges inward.
Mid‑Size Excavators (6–14 t)
The TG‑SG06 (600 mm cutting diameter, 700 mm max depth, 285 kg) is suited to mid-size excavators and commercial stump-grinding applications, including tree service, commercial sites, and municipal work. Its 16,900 Nm first-gear torque is configured for heavy-duty stump grinding. Flow 65–150 L/min and pressure 150–250 bar fit common mid‑size auxiliary circuits.
Large Excavators (14–30 t)
The TG‑SG08 (850 mm cut, 900 mm depth, 575 kg) is for high‑volume land clearing and large hardwood stumps. The TG‑SG08 provides 43,000 Nm of first-gear torque and 110–220 L/min flow requirement for large-carrier stump grinding applications. Verify lift capacity on 14–16 ton machines.
Installation and Mounting
Each grinder ships with a custom bracket matched to your excavator's pin spacing, pin diameter, and stick width. Supply the carrier make, model, pin dimensions, and auxiliary flow/pressure ratings at order — bracket sizing and carrier lift capacity are verified before shipment. Quick‑coupler configurations are available. Install by removing the bucket, pinning the bracket, and connecting hoses to the auxiliary circuit (pressure, return, and case drain if required). On mid-size and large carriers, route hoses with adequate slack for full boom and stick movement. Before first use, set auxiliary flow and pressure within the specified ranges for your model, confirm drum rotation direction, and grease bearings. The high-torque piston motor depends on correct flow and pressure settings — always verify before operation. Inspect teeth and hoses before each use.
Maintenance and Wear Parts
Primary wear items are carbide teeth — replace when chipped, worn flat, or missing. Inspect before each use; worn teeth reduce cutting efficiency and increase load on the high-torque motor. Grease drum bearings every 8–16 hours, and more frequently under heavy or continuous use. Check motor seals, hoses, and housing for damage. Replacement wear parts — teeth, holders, bearings, seals, hoses, and pins — are stocked for all three models. Keeping a stock of common wear parts minimizes downtime on job sites.
Request a Quote — Stump Grinder
Send us your excavator make/model, weight, hydraulic flow/pressure, preferred model (TG‑SG04/06/08), application, typical stump size, mounting type, and quantity. We'll confirm compatibility, supply the right bracket, and send a detailed quote. Dealers, OEMs, and fleets welcome for volume and private‑label orders.
