24-13-1027 CNC UNIVERSAL MILLING MACHINE

The purpose of this amendment is to:

1. Incorporate the following information into Solicitation SPE4A8-25-R-0008, for One (1) DMC 270 FD Portal Series CNC Universal Milling Machine in accordance with Purchase Description VIBB 24-13-1027, Dated 04 December 2025, with changes to the following:

Before Amendment:

3.3.5 Computer Numerical Control (CNC) Features. Computer Numerical Control (CNC) Features. The machine controllers shall consist of Celos with Siemens 840D CNC incorporating all standard features. The CNC unit shall provide programmable automatic control of machine functions, operating modes, axis movement and other part program directed functions for the machine. Movement in all axes shall be both synchronous and independent positioning. Control features shall include Manual Data Input (MDI), simultaneous control of all axes, linear interpolation, circular interpolation, programmable interface, part program edit, buffer edit capability, part program storage, fixed cycles, and control diagnostics. The CNC shall direct machine functions from command data stored in memory. The data stored in memory shall be input by the media specified herein. The control shall initiate a halt and error signal should a fault condition occur in the control. The control shall automatically shut down when internal operating temperatures exceed safe operating limits. The controller shall have the following features. In addition, the contractor shall identify and provide user interface key for operator and maintenance.

After Amendment:

3.3.5 Computer Numerical Control (CNC) Features. Computer Numerical Control (CNC) Features. The machine controllers shall consist of Celos with Siemens Sinumerik One CNC incorporating all standard features. The CNC unit shall provide programmable automatic control of machine functions, operating modes, axis movement and other part program directed functions for the machine. Movement in all axes shall be both synchronous and independent positioning. Control features shall include Manual Data Input (MDI), simultaneous control of all axes, linear interpolation, circular interpolation, programmable interface, part program edit, buffer edit capability, part program storage, fixed cycles, and control diagnostics. The CNC shall direct machine functions from command data stored in memory. The data stored in memory shall be input by the media specified herein. The control shall initiate a halt and error signal should a fault condition occur in the control. The control shall automatically shut down when internal operating temperatures exceed safe operating limits. The controller shall have the following features. In addition, the contractor shall identify and provide user interface key for operator and maintenance.

Justification For Amendment:

The Vendor is offering an upgraded controller in place of the 840D being that it is discontinued.

Before Amendment:

3.4 Size and Capacity (Table 1), BEFORE AMENDMENT Features

Size/Capacity

X Axis Travel

106 inches

Y Axis Travel

106 inches

Z Axis Travel

63 inches

C Axis Rotary Table (FD)

360 degrees

Table (max load)

13,200 lbs.

Table speed

Milling 20 rpm/turning 200 rpm

Rotary dresser (Dressing wheel)

Diameter of 125mm

Universal Milling Head with controlled A Axis Swivel Angle

Swivel Angle -125 / +35° degrees

(160° Total Swing)

Spindle

Standard Rotational Speed

12,000 rpm

Power (100% power-on time)

40 horsepower (hp)

Tool holder

HSK-A 100

Other:

Function

DMC 270 FD

Milling, Turning, and profile Grinding

After Amendment:

3.4 Size and Capacity (Table 1), AFTER AMENDMENT Features

Size/Capacity

X Axis Travel

106 inches

Y Axis Travel

106 inches

Z Axis Travel

63 inches

C Axis Rotary Table (FD)

360 degrees

Table (max load)

13,200 lbs.

Table speed

Milling 20 rpm/turning 200 rpm

Rotary dresser (Dressing wheel)

Diameter of 125mm

Universal Milling Head with controlled A Axis Swivel Angle

Swivel Angle -125 / +35° degrees

(160° Total Swing)

Spindle

Standard Rotational Speed

12,000 rpm

Power (100% power-on time)

56 horsepower (hp)

Tool holder

HSK-A 100

Other:

Function

DMC 270 FD

Milling, Turning, and profile Grinding

Justification For Amendment:

The current 40 HP rating is for the base machine; 56 HP rating is for the optioned grinding package which is included in the current SOW and quote.

Before Amendment:

N/A

After Amendment:

3.9.1.1 Grating, Support Structure, and Toe boards. Grating, Support Structure, and Toe boards. As defined in 29 CFR 1910 Subpart D, §1910.21 walking-working surfaces (i.e. the grating walkway) shall not have a hole, gap or void >2 inches in its least dimension or an unprotected edge >4 feet above the lower basement level. The grating, supporting I-beams, and toe boards need to be added or modified to meet this requirement. Grating, support structure and toe boards need to be added to cover openings exposed. Any new I-beam grating support shall be coated with an epoxy primer and topcoat to match the color of the existing grating support beams. Any pit area with cover plates/grating that is expected to have forklifts or other heavy moving equipment make contact with the cover plate/grating during the loading or unloading of material, the cover plates/grating shall be designed so it can support a 6K-forklift (Make/Year: Toyota /2017Model: 8FGU32) with a total loaded weight of 16,360lbs for loading and unloading areas of the machine. Heavy load supporting grating area shall be painted and distinguished with special markings to be clearly identified. Installation of walkways shall comply with OSHA minimum walking/working surface width requirements (see OSHA standard referenced in Section 2.1.1).

Justification For Amendment:

This paragraph needs to be added being that the vendor is providing closure grating around the pit for safety in accordance with OSHA 29 CFR 1910.

2.           Extend the solicitation close date. The solicitation close date is extended to COB December 23, 2025.

3.           All offers will be considered valid for 120 days from the closing date in this amendment.

4.           Before award, direct any questions to Christina Gibbs at Christina.Gibbs@dla.mil.

5.           All other terms and conditions remain the same.

List of Attachments:

1. Attachment A: Purchase Description VIBB 24-13-1027, Dated 04 December 2025, for the Acquisition of One (1) DMC 270 FD Portal Series CNC Universal Milling Machine.