Samputensili SC 300

$350,000 - $600,000 Updated 2026-03-16

Key Specifications

axes

5 CNC axes

max workpiece outside diameter

300 mm (11.8 in)

max module

8 mm (DP 3.2)

max face width

150 mm (5.9 in)

max helix angle

±35 degrees

max stroke rate

1,500 strokes/min

Overview

The Samputensili SC 300 is a CNC gear shaping and hobbing machine for external and internal cylindrical gears up to 300 mm (11.8 in) outside diameter and module 8. Samputensili is an Italian gear machine manufacturer founded in 1949, based in Bologna, and is part of the Star SU group — one of the few remaining independent European gear machine builders with a full range of gear cutting, shaving, and grinding solutions.

The SC 300 uses the gear shaping process — a reciprocating CNC-controlled cutter (shaper cutter) that generates the involute tooth profile through a plunging and stroking motion. Gear shaping is the preferred process for internal gears, cluster gears with insufficient runout for hobbing, and external gears with tight shoulders or flanges adjacent to the gear. The SC 300's 300 mm diameter capacity covers automotive and industrial gear shaping requirements where the gear geometry or workpiece configuration prevents hobbing.

Samputensili designed the SC 300 with a high-speed helical guide system for the shaping spindle, enabling helical gear shaping with helix angles up to 35 degrees. The CNC-controlled helical guide replaces the traditional mechanical change helical guide of older gear shapers, allowing helical angle changes through the NC program without mechanical disassembly. Maximum stroke rate of 1,500 strokes/min provides competitive cycle times for internal gear shaping compared to older hydraulic shapers.

The SC 300 runs on a Siemens Sinumerik control with Samputensili's GearShaper software for gear-specific programming. The machine is designed for integration with automation systems for production environments. Samputensili's SC series is positioned as a cost-competitive alternative to Gleason and Liebherr for gear shaping capacity in the 300 mm range. New SC 300 machines are typically priced in the $350,000-$600,000 range.

Full Specifications

Parameter	Value
Axes	5 CNC axes
Max Workpiece Outside Diameter	300 mm (11.8 in)
Max Module	8 mm (DP 3.2)
Max Face Width	150 mm (5.9 in)
Max Helix Angle	±35 degrees
Max Stroke Rate	1,500 strokes/min
Cutting Process	Gear shaping (internal and external)
Helical Guide	CNC-controlled helical guide system
Workpiece Spindle	Direct-drive rotary table
Shaper Spindle	High-speed precision spindle with stroke mechanism
CNC Control	Siemens Sinumerik with GearShaper software
Machine Dimensions	2,600 x 1,800 x 2,400 mm (102 x 71 x 94 in)
Manufacturer	Emag
Model	VSC 250
Power Requirement	60 kW
Grinding Length	1,016 mm

Specifications sourced from machinio.com — verified 2026-03-28

Strengths & Limitations

Strengths

Gear shaping is the only practical high-speed process for internal gears and cluster gears with insufficient runout for hobbing — the SC 300 provides this capability in the important 300 mm size range
CNC-controlled helical guide enables programmable helix angle changes without mechanical disassembly, reducing setup time for helical gear programs
Maximum 1,500 strokes/min provides competitive cycle times for internal gear shaping compared to older hydraulic or electromechanical shapers
Competitive pricing at $350K-$600K is significantly below comparable Gleason and Liebherr shaping platforms, making the SC 300 attractive for shops with cost-sensitive capital budgets

Limitations

Gear shaping is inherently slower than gear hobbing for external gears — the SC 300 is best justified where shaping is required by geometry, not as an alternative to hobbing for external gears
Samputensili is a smaller company than Gleason or Liebherr — parts availability, service response, and long-term support infrastructure are important due diligence items before purchase
Maximum module 8 and 300 mm diameter is narrower than some competing platforms — shops with larger gear size ranges may need supplemental capacity

Best For

Automotive and industrial gearbox manufacturers producing internal ring gears and cluster gears that cannot be hobbed due to geometric constraints Planetary gearbox producers cutting internal ring gears for construction equipment, agricultural machinery, and industrial reducers within the 300 mm envelope General gear job shops seeking a cost-effective gear shaping solution for internal gear production without the premium cost of Gleason or Liebherr platforms European automotive Tier 1 suppliers producing helical internal gears for automatic transmission planetary carriers and DCT ring gears

Frequently Asked Questions

01 Why is gear shaping preferred over hobbing for internal gears?

Hobbing uses a cylindrical hob that must have clearance to enter the gear bore and rotate through a full engagement arc. For internal gears, the hob's diameter and rotation radius interfere with the bore, making internal hobbing impractical for most internal gear sizes. Gear shaping uses a shaper cutter that reciprocates axially into the gear bore, with the cutter diameter and geometry matched to the internal gear, making internal shaping the standard production process for ring gears of all sizes.

02 What is the maximum helix angle for internal gears on the SC 300?

The SC 300 can shape helical internal gears up to approximately 35 degrees helix angle using the CNC-controlled helical guide. Helical internal gears are less common than spur internal gears due to manufacturing complexity, but they are used in some automatic transmission planetary gearsets for noise reduction. The CNC helical guide on the SC 300 allows programmable helix angle adjustment without the mechanical change helical guide required on older shapers.

03 How does Samputensili compare to Gleason and Liebherr for gear shaping machines?

Gleason (through its Gleason-Pfauter heritage) and Liebherr both offer gear shaping machines with established service networks and complete gear production ecosystem integration. Samputensili's SC 300 is priced competitively below these platforms and provides comparable fundamental gear shaping capability. The decision often comes down to service infrastructure, existing machine fleet (Gleason or Liebherr ecosystem), and whether the price advantage of the SC 300 justifies accepting a smaller service network.

04 Can the SC 300 perform gear shaving as well as shaping?

The SC 300 is a gear shaping machine — it uses a shaper cutter in a reciprocating process. Gear shaving is a different finishing process using a gear-shaped shaving cutter in a crossed-axis rolling motion. Samputensili produces separate gear shaving machines in their SH product line. For complete gear manufacturing from blank to shaved finish, Samputensili's shaping and shaving machines can be used in sequence, but they are separate machines, not dual-function platforms.

05 What is the typical cycle time for internal gear shaping on the SC 300?

Cycle time for internal gear shaping depends on the number of teeth, module, face width, and the number of shaping passes required. For a typical 60-tooth, module 3, 80 mm face width internal ring gear in a two-pass cycle (roughing and finishing), cycle times of 3-6 minutes are achievable on the SC 300 at maximum stroke rates. Longer face widths and more passes increase cycle time proportionally. Samputensili's applications team can provide cycle time estimates for specific gear designs.