Xinda XDT60 Portable Boring Machine: How to Choose Between Electric, Worm‑Drive, Hydraulic and Bore‑Weld Versions Without Costly Mistakes

A common procurement mistake with portable boring machines is comparing quotes only by “maximum boring diameter,” then discovering on site that there is no three‑phase power, the weld build‑up volume is insufficient, continuous multi‑hole work makes manual feed too tiring, or underground conditions fail explosion‑proof requirements. For the medium φ65–500 mm range, the XDT60 is offered in several sub‑types — standard electric, worm‑gear electric, hydraulic, and integrated bore‑weld. Select by “site conditions” rather than “maximum specs” before placing an order to reduce rework. This article looks at it from a procurement‑review angle.

I. Lock four groups of hard parameters first, then pick the sub‑type

XDT60 sub‑types have different parameters; review them by intended use.

Hydraulic version

• Boring range: φ65–500 mm

• Feed travel: 700 mm

• Boring bar: one φ60 × 2 m bar

• Single‑side depth of cut: 3 mm

• Roundness: 0.03 mm; roughness: 3.2 μm

• Drive: 15 kW hydraulic power pack, stepless speed, forward/reverse

• Accessories: centering device, 3 tool holders of different sizes, 2 supports, 8 support bolts, clamp‑type tool bar, inserts, feed screw, hydraulic power pack, etc.

Standard electric / worm‑gear electric

• Boring bar φ60 mm and boring φ65–500 mm are the common baseline

• Standard electric with manual/automatic feed suits repair sheds, workshops and general sites with three‑phase power

• Worm‑gear electric feed is easier on the operator; for single‑shift continuous multi‑hole work it lowers operating effort

Integrated bore‑weld (build‑up welding + boring on the same frame)

• Boring φ65–500 mm; weld build‑up φ50–500 mm

• Main motor 3.8 kW servo; feed 400 W / 12 N·m

• Main motor output 0–300 r/min, stepless

• Max single‑side cutting 2–3 mm; single‑side weld thickness 4–5 mm (wire φ1.0 / φ1.2 depending on configuration)

• Stroke 500 mm, customizable; roundness 0.03 mm, Ra 3.2

• Controller can be configured with pendant + PLC CNC screen, manual/automatic switching

II. Split by “on‑site power supply”

• Stable three‑phase power, workshop/repair shed: standard electric or worm‑gear electric. Use worm‑gear for single‑shift multi‑hole work to reduce feed effort; use standard electric for occasional repairs to control cost.

• Site has power but unstable, long cable runs are difficult: consider the hydraulic version with its own power pack, or evaluate taking power from an on‑site generator/hydraulic source.

• No mains power, temporary field repair yard: hydraulic is preferable — the 15 kW pack is self‑driven and is not limited by welding cables or motor supply.

III. Split by “weld build‑up volume”

Medium articulated‑hole wear falls into three levels:

• Slight out‑of‑round, no material loss: bore back to round and restore size → standard electric/hydraulic boring sub‑type is enough.

• Single‑side looseness, deformed old bush seat: ream first or apply minor build‑up then bore → if weld volume is small, weld externally then bore with the standard version; if one‑datum completion is required, use the integrated bore‑weld.

• Local defects, grooving, old‑pin galling: deposit weld filler first then bore, single‑side build‑up 4–5 mm → integrated bore‑weld XDT60; after the weld bar builds up material, switch to the φ60 boring bar for finishing, avoiding “welder repairs, then boring machine re‑aligns” with two separate datums.

IV. Split by “number of holes and continuous operation”

• Single‑hole occasional repair: standard electric with manual feed is sufficient; keep the sub‑type simple.

• 2–3 in‑line holes, single‑shift continuous: worm‑gear electric or hydraulic. Automatic/easy feed, one‑time bar threading with the centering device, rough/finish in stages without changing datum.

• Multiple machines in rotation, standardized repair shop: integrated bore‑weld + PLC screen.

• Field mining trucks / ship deck mobile repair: hydraulic gives better mobility and power independence; if build‑up welding is also needed, evaluate a hydraulic‑integrated bore‑weld package (confirm separately with the manufacturer — do not assume all variants are universally compatible).

V. Six‑item procurement review checklist

1. Bore size and bar length: φ65–500 standard; standard bar φ60 × 2 m; if hole spacing is longer, confirm extended bar, auxiliary supports and split transport cases.

2. Stroke requirement: hydraulic 700 mm, bore‑weld 500 mm customizable — verify against the deepest hole and tool‑holder travel separately; do not mix the two.

3. Power / explosion‑proof: list three‑phase power / generator / hydraulic source / underground flameproof requirements separately and write them into the technical agreement.

4. Build‑up welding scope: whether bore‑weld integration is required, wire specification, single‑side weld thickness, external shielding gas/welder, post‑weld cooling procedure.

5. Accuracy acceptance: roundness 0.03 mm and Ra 3.2 as nominal machine references; in practice re‑measure per repaired‑hole material, out‑of‑round amount, support method and technical agreement.

6. Accessories and after‑sales: centering device size ranges, tool‑holder specifications, number of supports, insert consumption, power‑pack/servo/PLC warranty, on‑site training.

Procuring the XDT60 portable boring machine is essentially choosing the “drive form” for medium φ65–500 mm hole groups by site conditions, not choosing the “maximum diameter.” Before ordering, lock down four items — power supply, build‑up volume, number of holes and stroke — so that on arrival the machine can “thread the bar and center immediately, center and bore coaxially immediately,” without the situation of buying big specs that cannot be used on site.

(This article is compiled from publicly available corporate materials and industry information for reference only. Specific product information and service terms are subject to the official release of the manufacturer.)