SZGH-46 Y Axis Turn-Mill Compound Machine | 45mm Bar | 4+4 Power Heads | End-Face + Side-Face in One Setup

What Is the SZGH-46 Y Axis Turn-Mill Compound Machine?

The SZGH-46 Y axis is a turning-milling compound CNC machine built on the SZGH-46 high-rigidity lathe platform. On the basis of the SZGH-46J, a Y-axis assembly with a 4+4 power head configuration — 4 end-face power heads and 4 side-face power heads — and an 8-station servo turret are installed, realising a combined tooling configuration of 8 turning tool positions plus 4 end-face and 4 side-face milling/drilling positions. This enables the machine to complete turning, facing, threading, cross-drilling, axial drilling, tapping, side milling, and end milling on a single workpiece in one clamping, without transfer to a secondary machine. It handles bar stock up to 45mm diameter and disk blanks up to Ø100mm, and is suited for complex parts in the automotive, hydraulic, aerospace, and medical sectors where multi-face machining precision and labor efficiency are both critical.

Technical Specifications

Machining Capacity

Y-Axis (Live Tooling)

Axis Travel & Feed

Spindle

Machine Dimensions & Weight

Component Specifications

All parameters listed are for reference. The configuration in the final purchase order and physical acceptance shall prevail.

Key Features & Advantages

4+4 Power Head Configuration — End-Face AND Side-Face in One Program

The defining capability of the SZGH-46 Y axis over the SZGH-36 Y axis is the 4+4 power head layout: 4 power heads positioned for axial (end-face) operations and 4 power heads positioned for radial (side-face) operations — all on the same Y-axis assembly, all accessible within a single NC program without re-clamping.

In practical terms, this means a part requiring all of the following can be completed in one machine, one setup:

• Turned OD, faced ends, and threaded shank (turning spindle)

• Cross-drilled locking hole on the side face (side power head)

• Axial tapped hole on the end face (end power head)

• End-face milled slot or hex drive feature (end power head)

• Milled flat on the side OD (side power head)

The SZGH-36 Y axis handles the side-face operations only. The SZGH-46 Y axis handles both. For parts that require machining on multiple faces — axially and radially — the 4+4 configuration is the correct choice, and the only alternative is a lathe plus a machining center plus a transfer step with the repositioning error that entails.

8-Station Servo Turret — Full Tooling Complement for Complex Parts

The SZGH-46 Y axis is equipped with an 8-station servo turret for the primary turning tool positions. This provides 8 independent tool slots for the turning, facing, grooving, threading, and boring operations that precede or interleave with the live tooling operations. An 8-station turret means a complex part program can load turning tools for roughing, semi-finishing, finishing, internal boring, grooving, and threading — all without a manual tool change. The servo turret indexes faster and more repeatably than a hydraulic turret, contributing to shorter cycle times and better positioning accuracy at the turret index position.

ER25 Toolholders — Larger Tool Capacity Than the 36 Y Axis

The SZGH-46 Y axis power heads use ER25 collet toolholders, compared to ER16 on the SZGH-36 Y axis. ER25 accommodates tool shanks up to 16mm diameter — covering standard end mills, shell mills, and drills used on 45mm bar stock workpieces that would be too large for ER16's 10mm maximum shank. The maximum drill diameter supported by the power heads is Ø16mm, matched to the typical cross-hole and through-hole range on parts within the 45mm bar capacity.

ER25 is a globally standardised collet system with wide tool availability from all major cutting tool brands worldwide.

220mm Y-Axis Travel — Greater Reach for Larger Workpieces

The Y-axis travel on the SZGH-46 Y axis is 220mm — 80mm more than the 140mm on the SZGH-36 Y axis. This additional travel accommodates the larger workpiece diameters (up to 45mm bar, Ø100mm disk blank) and the greater radial offset required for side milling and cross-drilling on longer, larger-diameter parts. For features positioned far from the workpiece centerline — milled flats at the full radius of a 45mm part, for example — the 220mm travel ensures the power head can reach the feature without axis limit violations.

High-Precision Foundation: 3,000kg Base, ±0.0075mm, SZGH Barrel Spindle

The SZGH-46 Y axis inherits the full precision specification of the SZGH-46J base machine: ±0.0075mm machining accuracy, Ra 1.0 surface roughness, 3,000kg anti-deformation cast base, SZGH self-made high-rigidity barrel spindle, Ø32mm ball screws, and Ø30mm H-class linear guide rails. The addition of the Y-axis live tooling assembly does not compromise the base machine's turning precision — the turning spindle and the live tooling spindle are mechanically independent, and the rigid base absorbs vibration from both during simultaneous or sequential operation.

This matters because compound lathes from some manufacturers sacrifice base rigidity to accommodate the live tooling assembly. On the SZGH-46 Y axis, the live tooling is an engineered addition to an already-proven precision platform, not a redesign.

One Machine Replaces Two — Labor and Floor Space Reduction at Scale

A production cell for complex parts requiring turning plus multi-face milling typically consists of: a CNC lathe, a vertical machining center, a material transfer rack, and two operators (or one operator splitting time between both machines). The SZGH-46 Y axis collapses this to one machine and one operator — with automatic bar feeder integration, that operator can supervise multiple SZGH-46 Y axis units simultaneously.

The floor space saving is also significant: the 2,120 × 1,620mm footprint of the SZGH-46 Y axis replaces two machine footprints (typically 3,500–5,000mm combined length) plus transfer space. For factories paying per square metre of production floor, this is a measurable cost reduction independent of the labor savings.

Applications & Industries

The SZGH-46 Y axis is suited for complex parts requiring turning plus multi-face milling and drilling on bar stock up to 45mm diameter or disk blanks up to Ø100mm — particularly where both end-face and side-face features must be machined within tight positional tolerances relative to the turned OD.

Hydraulic Valve Bodies & Manifold Blocks

Cartridge valve bodies with axial inlet ports (end-face) and radial outlet ports (side-face), manifold blocks requiring multi-face drilling and tapping — the defining application for 4+4 compound lathes. A hydraulic valve body that previously required lathe + machining center with a fixture transfer is completed on the SZGH-46 Y axis in a single setup.

Automotive Transmission & Driveline Components

Planetary gear carriers with axial and radial oil passages, differential spider shafts with cross-drilled lubrication holes, ABS sensor rings with indexed holes — parts requiring both axial and radial machining features within tight angular and positional tolerances.

Aerospace Fasteners & Structural Components

Titanium and stainless steel aerospace fasteners with drive features (end-face hex or Torx socket) and locking cross-holes (side-face), structural brackets with multi-face mounting features — where repositioning error between operations is not acceptable by specification.

Medical Device Components

Bone screw drivers requiring end-face drive sockets and side locking holes, implant trial bodies with multi-face features, surgical instrument handles requiring both axial and radial machined details.

Complex Precision Fittings

Hydraulic and pneumatic fittings with end-face inlet threads and side-face port threads, multi-port valve bodies, precision coupling bodies — any fitting requiring thread features on more than one face.

Typical Workpiece Materials

SZGH-46 Y Axis vs. SZGH-36 Y Axis vs. Lathe + Machining Center

Certifications & Quality Assurance

• CE Certification — Compliant with European Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU.

• ISO 9001 — SZGHTECH production and quality management system certified.

• National High-Tech Enterprise — Certified by the Chinese Ministry of Science and Technology since 2018.

• 100+ Patents — Including anti-deformation base casting, SZGH barrel spindle design, and SZGH CNC system software copyright.

Frequently Asked Questions

What is the difference between the SZGH-46 Y axis and the SZGH-36 Y axis?

The SZGH-46 Y axis differs from the SZGH-36 Y axis in four key areas: (1) bar capacity — 45mm vs 35mm; (2) power head configuration — 4+4 (end-face + side-face) vs side-4 only, meaning the 46 Y axis can also machine axial features on the end face; (3) Y-axis travel — 220mm vs 140mm; (4) toolholder size — ER25 (up to 16mm shank) vs ER16 (up to 10mm shank); and (5) base precision — ±0.0075mm on the 46 platform vs ±0.01mm on the 36 platform. Choose the SZGH-46 Y axis when your parts exceed 35mm diameter or require machining on both the end face and side face.

What does "4+4 power head configuration" mean?

It means the Y-axis assembly carries 4 live power heads positioned axially (for drilling, tapping, and milling on the end face of the workpiece) and 4 live power heads positioned radially (for cross-drilling, tapping, and side milling on the side face). Both sets of power heads are accessible within the same NC program and the same clamping. This enables complete multi-face machining — turning plus end-face plus side-face operations — without ever removing the part from the chuck.

Can the SZGH-46 Y axis machine both the end face and the side face of a part in one setup?

Yes — this is the machine's defining capability and the primary reason to choose it over the SZGH-36 Y axis (which handles side-face only). The 4 end-face power heads drill, tap, and mill axially into the end of the workpiece. The 4 side-face power heads drill, tap, and mill radially into the side of the workpiece. Both operations are programmed in a single NC file and executed within the same clamping, maintaining ±0.0075mm positional accuracy between all machined features.

What toolholder system do the power heads use?

The power heads use ER25 collet chucks, accommodating tool shanks from 1mm to 16mm diameter. ER25 is a globally standardised collet system available from all major cutting tool manufacturers worldwide. The maximum drill diameter supported is Ø16mm.

How does the SZGH-46 Y axis compare to running a lathe plus a separate machining center?

The lathe + machining center combination requires two machines, two operators (or doubled cycle time per operator), a material transfer step between operations, and introduces a repositioning error of 0.02–0.08mm each time the part is re-fixtured. The SZGH-46 Y axis replaces both machines with one, operates with one operator (multiple units with bar feeder), eliminates the transfer step, and achieves ±0.0075mm positional accuracy between all features because the part never leaves the chuck. The floor space occupied by the SZGH-46 Y axis is typically 40–50% of the combined footprint of a lathe plus machining center with transfer space.

What is the servo turret and why does it matter?

The 8-station servo turret holds the primary turning tools (external turning, boring, grooving, threading tools). "Servo" means the turret indexes under servo motor control rather than hydraulic actuation — resulting in faster, more repeatable positioning at each tool station. For complex parts cycling through many tool positions, faster turret indexing directly reduces cycle time. The servo mechanism also produces less positional scatter at the turret index point, which contributes to dimensional consistency across the production batch.

What accuracy does the SZGH-46 Y axis achieve on live tooling operations?

The positional accuracy of drilled holes, milled features, and tapped threads relative to the turned OD is governed by the machine's axis positioning accuracy: ±0.0075mm. This applies to all operations — turning and live tooling — because all operations share the same rigid base, the same linear guide rail system, and the same SZGH Ac8F-G control system servo loop.

What is the lead time and shipping arrangement?

Standard production lead time is 20–35 working days from receipt of deposit. Due to the 3,000kg machine weight, a 20-foot container typically fits 1–2 units. The machine ships in a reinforced wooden export crate with anti-rust treatment and moisture barrier protection. SZGHTECH provides full customs documentation: commercial invoice, packing list, certificate of origin, CE declaration of conformity, and factory test report.

Export Markets & Customer References

The SZGH-46 Y axis compound machine is in active production at:

Eastern Europe: Turkish hydraulic valve body manufacturers (multi-port valve production), Romanian automotive tier-1 suppliers (driveline components with multi-face features)

Southeast Asia: Vietnamese precision machining workshops (medical device and aerospace subcontracting), Thai automotive tier-1 suppliers (transmission and fuel system components)

Middle East: Saudi Arabian oil & gas component manufacturers (multi-port hydraulic fittings), UAE precision engineering workshops

Americas: Mexican automotive supply chain (complex fastener and driveline production), US precision job shops via SZGH regional distributors

Request a Quote or Download Catalog

Need to machine both the end face and side face of complex parts — in one setup, on one machine?

SZGHTECH's export team responds to all inquiries within 1 business day.

• Email: export02@szghtech.com

• WhatsApp / WeChat: +86 137 2860 1949

• Request a Formal Quotation 

• Download Full Machine Catalog (PDF) 

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