TAJMAC ZS 42
Key Specifications
number of spindles
max bar diameter
spindle speed range
main spindle drive
cross slides
end working slides
Overview
The TAJMAC ZS 42 is a CNC multi-spindle turning center featuring six spindles and a maximum bar capacity of 42 mm. The ZS designation distinguishes this model from the ZSPS series, representing a mid-range bar diameter configuration that fills the gap between the 32 mm ZSPS models and the larger 52 mm variant. The ZS 42 targets the broad class of turned parts in automotive, hydraulic, and industrial manufacturing where 32 mm bar capacity is insufficient but the full 52 mm envelope is not required.
The 42 mm bar diameter is significant because it encompasses a wide range of automotive and hydraulic components that fall above the standard 32 mm threshold — including hydraulic union fittings in larger pipe sizes, automotive suspension ball-joint housings, pump impeller blanks, and industrial valve cartridges. Manufacturers running these part families on single-spindle turning centers face throughput limitations that the ZS 42's multi-spindle cycle directly addresses. Six simultaneous machining positions, each performing independent CNC-programmed operations, multiply effective spindle time by a factor approaching 6:1 compared to single-spindle approaches.
The ZS 42's servo-driven slide system follows the architecture established across the TAJMAC CNC multi-spindle range. Cross slides at each spindle position perform external turning, profiling, grooving, and chamfering under program control, while end-working slides provide axial drilling, tapping, boring, and facing capability. The Siemens Sinumerik multi-channel control manages each position as an independent axis group, allowing complex parts with mixed turning and hole-making requirements to be fully programmed and optimized per station without compromising cycle time at other positions.
Material flexibility on the ZS 42 is broad: the machine handles free-machining steel grades, case-hardening steels, stainless steels, brass alloys, aluminum, and copper. High-pressure through-spindle coolant supports chip evacuation and tool life across materials, particularly important at 42 mm diameter where chip volume per revolution is substantially higher than at 32 mm. The rigid cast iron base structure minimizes thermal and mechanical deformation during continuous production, supporting the dimensional consistency demanded in automotive and hydraulic applications.
Pricing for the TAJMAC ZS 42 is typically in the $1,000,000–$1,500,000 range, positioning it as a mid-tier investment among CNC multi-spindle automatics. For facilities already proficient in multi-spindle operation, the ZS 42 offers a straightforward capacity expansion path for larger-diameter part families without the full cost of a large-bore ten-spindle machine. TAJMAC supports the ZS 42 with European service coverage and spare parts availability, with growing support networks in North American and Asian markets served through distributor partnerships.
Full Specifications
| Parameter | Value |
|---|---|
| Number Of Spindles | 6 |
| Max Bar Diameter | 42 mm (1.65 in) |
| Spindle Speed Range | 100–4,000 rpm |
| Main Spindle Drive | AC servo per spindle |
| Cross Slides | CNC servo-driven per spindle position |
| End Working Slides | CNC servo-driven |
| Bar Feed | Integrated magazine bar feed |
| CNC Control | Siemens Sinumerik (multi-channel) |
| Coolant System | High-pressure through-spindle coolant |
| Machine Weight | Approx. 14,000 kg (30,900 lb) |
| Chattare | linee fisse e mobili |
| Manda Sms | blocco |
| Malfunzionamento | chatta |
| Tinit | helptin@telecomitalia.it |
| Chiama Il | 800081081 |
| Swing Over Bed | 40.0 in |
| Machining Length | 120.0 in |
Specifications sourced from machinetools.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 42 mm bar capacity addresses a practical gap between the 32 mm and 52 mm ZSPS models, covering a wide range of hydraulic fittings and automotive components
- Six-spindle CNC configuration delivers multi-spindle throughput with the changeover flexibility of servo-driven, cam-free slides
- Siemens Sinumerik multi-channel control provides a well-supported, industry-standard programming environment
- Mid-range capital cost compared to larger-bore multi-spindle machines, with lower operating costs per part at high volumes
- Czech Republic manufacture with European engineering standards at pricing competitive with equivalent German and Swiss configurations
Limitations
- Six cycle positions may be limiting for highly complex parts requiring seven or more distinct machining steps without tool combining
- 42 mm diameter is a less common format than 32 mm or 52 mm, resulting in slightly narrower tooling system support compared to the most standard bar sizes
- Multi-spindle automatics require capital commitment and production volumes that are difficult to justify for low-to-medium volume part families
Best For
Frequently Asked Questions
01
The ZS 42 has a 42 mm maximum bar diameter, compared to 32 mm for the ZSPS 6/32 and 52 mm for the ZSPS 6/52. It occupies the mid-range position for manufacturers whose parts exceed 32 mm but do not require the full large-bore capability of the 52 mm model. All three use six spindles and CNC servo slides.
02
Yes. The ZS 42's end-working slides support tapping and thread-forming operations at each position. For external threads, thread-cutting or thread-whirling attachments can be configured at appropriate spindle positions, making it suitable for hydraulic fittings and connectors with standard thread forms.
03
Because all slides are servo-driven and controlled by program, changeover on the ZS 42 involves loading a new CNC program and swapping tooling — no cam drums or mechanical linkages to replace. For part families sharing tooling configurations, changeovers can be completed in under two hours, making shorter runs more economically viable than on conventional cam multi-spindles.
04
Yes, though stainless steel imposes higher cutting forces, more heat generation, and greater tool wear than free-machining steel or brass. The ZS 42's servo drives provide programmable feed rates and the high-pressure coolant system manages thermal load, making it capable of stainless steel production at the cost of longer cycle times and more frequent tooling changes.
05
TAJMAC supports the ZS 42 and other ZSPS-family machines through a network of European service centers and distributor partnerships in North America and Asia. Spare parts are stocked at the Czech Republic facility and distributed through regional partners. Response times vary by region and are generally comparable to other mid-tier European multi-spindle manufacturers.
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