SMTCL: choose the cutting route.

Are the important features concentric, angled or continuously curved?

Shenyang Machine Tool supplies metal-cutting machines across turning, machining centres and heavier equipment. Within the reviewed catalogue, CAK50 is an economic CNC turning family; M8.4 is a five-axis vertical machining centre. They answer different feature and workholding questions. A part with turned diameters and cross-holes may need more than one operation: drawing that sequence is more useful than asking for the largest spindle rating.

CAK50: the 85 and 135 lengths share a turning family, not every setup.

The current Chinese catalogue lists CAK50-85 with 890 mm maximum part length and 850 mm cutting length; CAK50-135 gives 1390 and 1350 mm respectively. Both list 500 mm swing over the bed, 300 mm over the slide and 500 mm maximum cutting diameter. Those three diameters describe different restrictions; model the jaw, tool and saddle approach for the intended cut.

The standard 85/135 technical columns list an A2-8 spindle nose, 250 mm chuck, 78 mm bore, a vertical four-position toolpost, 25 × 25 mm external tools, 7.5 kW rated main servo motor and X/Z rapids of 6/12 m/min. The separate configuration chart offers other spindle arrangements and bore choices. Specify one complete build; do not treat an alternative bore or drive as an extra capability of the standard column.

For a long shaft, draw the grip length, unsupported reach, centre holes, tailstock and any steady/follower-rest requirement. The 75 mm tailstock quill diameter and 150 mm travel do not establish admissible support force. For a disc, review jaw reach and face/bore access rather than taking the bed swing as usable cutting clearance.

CAK5085 ↗

850 mm cutting length; 2800 kg listed machine mass; 2770 × 1700 × 1735 mm body reference. Plan loading and maintenance access in addition to that body.

CAK50135 ↗

1350 mm cutting length; 3000 kg; 3270 × 1700 × 1735 mm body reference. Review the longest supported cut and released straightness, not only whether the blank fits.

CAK5085P · earlier catalogue reference ↗

The English table distinguishes 85P by a six-position horizontal toolpost and different cutting/spindle entries. The current Chinese chart does not identify P. Ask for the offered P revision and its build sheet before using those historical figures in a purchase specification.

The catalogue’s IT6–IT7 machining entry is not a tolerance promise for every drawing. Agree material, tools, clamping, warm-up, diameter/roundness and inspection after release. Do not infer a cycle or a guaranteed capability index from a general brochure statement.

M8.4: select one rotary-table, spindle and control package.

The official M8 page supplies M8.4 material describing a moving-beam gantry layout and a two-axis trunnion table. Its three columns share X/Y/Z travel of 600/680/450 mm, spindle-nose-to-table reference of 90–540 mm, A travel of ±120° and C travel written as n × 360°. None is the swept clearance of a tall fixture and long holder.

Start with the loaded fixture and each face’s approach. The standard table entry is Ø400 mm with 200 kg allowed load; the high-specification technical column is Ø500 × 420 mm with 300 kg. Mass alone cannot settle rotary selection: obtain load distribution, centre-of-gravity/moment and the full swept-envelope limits from the offered build.

Tooling and spindle duty change with the package. The standard columns specify BT40 and 12000 rpm, with 11/15 kW and 70/96 N·m at the table’s 100%/40% duty entries. The high-specification Siemens column specifies HSK63A, 18000 rpm, 25/32 kW and 83/107 N·m at those same stated duties. The 24000 rpm configuration option is not the standard rating of any of these three columns.

M8 series page: reviewed M8.4 detail ↗

Swipe the table on a phone. These are the columns in the dated M8.4 material, not a statement that all options are installed. A wider tool can consume an adjacent magazine position. Published tool length/mass limits are 300 mm/7 kg; confirm holder dimensions, balance and the actual tool-change path.

The material distinguishes a standard single-axis contact tool setter from optional contact/non-contact tool setting and workpiece measurement. Agree the supplied devices, measurement cycles, calibration artefacts and reports. A feedback resolution, rotary encoder entry or optional probe does not establish the tolerance of the finished part.

Prove the process at the clamp, then inspect after release.

The M8.4 catalogue illustrates steering knuckles, manifolds and other multi-face parts separately from impellers and an S test piece for simultaneous machining. These are application illustrations, not evidence that a buyer’s part has already been qualified. Its test-piece accuracy claims include specific conditions; agree your own representative geometry, material and inspection method instead of copying them into a blanket guarantee.

Include tool change, loading, probing, chip management and controlled-stop recovery in the trial time. Confirm software licences, backups, training and the delivered safety/interlock scope. A five-axis software package is one contract item; it is not a complete automated cell or a validated process for every part.

Identify the company and the build responsible for delivery.

The official company profile identifies 沈阳机床股份有限公司, established in 1993, headquartered in Shenyang and part of Genertec. It describes CNC-machine, Xihe heavy-machine and Yinfeng casting industrial parks, with metal-cutting machine tools as its principal products. Historical predecessor-plant achievements are separate from the present listed company’s incorporation date.

The company’s August 2026 half-year issuer disclosure confirms stock code 000410 and the listed entity; its shareholder section identifies China General Technology Group as controlling shareholder. This corroborates identity and the disclosed corporate relationship. It is not a machine certification, factory audit, stock check or overseas response-time guarantee.

In the quotation, identify the legal seller, actual manufacturing/build responsibility, model suffix and catalogue revision, control and spindle package, installation/geometry acceptance, destination utilities and service arrangements. For spares, use the serial number and fitted component identifiers; do not assume two CAK revisions or an i5 and Siemens M8.4 use interchangeable electrical and motion components.