Universal Mills Adjustable Safety Guards

Description

Description of the MST-FR01 Milling Machine Safety Guard

The MST-FR01 is designed to provide complete, reliable protection during milling operations on universal and vertical machines. Built from strong yet lightweight tubular steel, this safety guard protects the operator from flying chips, lubricant splashes, and accidental contact with rotating parts of the vertical spindle.

It mounts securely on the flank of the machine base, ensuring excellent rigidity and ease of access. The articulated arm makes the guard exceptionally versatile — offering smooth movement, fast positioning, and immediate access to the machining area. This flexibility makes it ideal for multiple machine configurations and work setups.

The semi-circular polycarbonate screen features a dual-opening system:

• The shield can be opened horizontally (point 1) for quick access to the tool area.
• It can also be swung completely away from the working zone (point 2), providing full clearance for part setup or maintenance.

Each version is available with a right-side (/DX) or left-side (/SX) configuration to adapt perfectly to the operator’s position and machine layout.

Every MST-FR01 is equipped with a dual interlocked safety microswitch that prevents the milling machine from starting when the guard is open or incorrectly positioned, ensuring total compliance with OSHA, ANSI, ISO-EN, and CE safety standards.

Main Components (see numbered diagram)

1. Levelling anchorage stirrup - in tubular steel
2. Depth-adjustable safety guard support
3. Safety microswitch main box - 180° rotation - n.2 NC contactselectrically interlocked
4. Horizontal adjustment clamp
5. Articulated arms in tubular steel
6. Rubbing articulation with friction disc
7. Shield-arm connection clamp - in pressed steel
8. Shield structure in tubular steel
9. Oil-resistant thermo-formed shield in shockproof plastic

About the Interlock Safety System

The interlock safety system automatically prevents the milling machine from running when the guard is open or improperly positioned. This safety mechanism significantly reduces accident risks and guarantees conformity with OSHA, ANSI, ISO-EN, and CE safety standards.

Interlock Switch Specifications

Contact arrangement: Two safety switches—2 NC contacts per switch
Switching ability: 4 A @ 24 V AC, 4 A @ 120/250 V AC
2 A @ 24 V DC, .4 A @ 120 V DC, .3 A @ 250 V DC
Mechanical life: 1 million switching cycles
Enclosure rating: IP 67

Available Accessory – MST-BA01/02 Additional Articulated Arm

For greater reach and flexibility, the MST-FR01 can be fitted with the MST-BA01/02 additional articulated arm extension. This extension increases the working radius of any shield equipped with rubbing articulated arms. Delivered with all required accessories and bolts. Features include:

• Simple articulated arm with a wheel base 325 mm
• Interlock compatibility
• Full compliance with OSHA, ANSI, ISO-EN, and CE standards

View MST-BA01/02 Accessory Product Page

Replacement and Spare Shields

MST-FR01 Spare Shield

Maintenance and Cleaning

Before each use:

• Check the integrity of the guard and inspect for cracks or visible damage
• Verify correct operation of the interlock microswitch system

Cleaning and maintenance should be performed by qualified personnel only, and always when the machine is turned off. Clean the shield whenever clear visibility of the machining zone is required to maintain optimal safety and visibility.

Safety Guard's Technical Specifications

Technical specifications of the MST-FR01 Universal Milling Machine Safety Guard – Dimensions and Spare Shields

CODE	Name	A	B	Spare Shield
MST-FR01/300/DX	Universal Mills adjustable safety guard/300/Right	300 mm 11 13/16"	200 mm 7 7/8"	MST-FR01/300/SC
MST-FR01/300/SX	Universal Mills adjustable safety guard/300/Left				300 mm 11 13/16"	200 mm 7 7/8"	MST-FR01/300/SC
MST-FR01/400/DX	Universal Mills adjustable safety guard/400/Right	400 mm 15 3/4"	235 mm 9 1/4"	MST-FR01/400/SC
MST-FR01/400/SX	Universal Mills adjustable safety guard/400/Left				400 mm 15 3/4"	235 mm 9 1/4"	MST-FR01/400/SC
MST-FR01/500/DX	Universal Mills adjustable safety guard/500/Right	500 mm 19 11/16"	235 mm 9 1/4"	MST-FR01/500/SC
MST-FR01/500/SX	Universal Mills adjustable safety guard/500/Left				500 mm 19 11/16"	235 mm 9 1/4"	MST-FR01/500/SC
MST-FR01/600/DX	Universal Mills adjustable safety guard/600/Right	600 mm 23 5/8"	235 mm 9 1/4"	MST-FR01/600/SC
MST-FR01/600/SX	Universal Mills adjustable safety guard/600/Left				600 mm 23 5/8"	235 mm 9 1/4"	MST-FR01/600/SC

FAQ – Frequently Asked Questions

How do I choose the correct installation side?

Determine whether your milling machine requires a right-hand or left-hand mounting. Add the suffix /DX for right or /SX for left when placing your order.

Is this guard compatible with universal milling machines?

Yes. The MST-FR01 is designed for both vertical and universal milling machines, making it suitable for a wide range of configurations.

What are the benefits of the interlock system?

The interlock prevents the machine from starting when the shield is open, reducing accident risk and ensuring OSHA, ANSI, ISO-EN, and CE compliance.

Can I extend the arm’s reach?

Yes. The MST-BA01/02 articulated arm extension increases the guard’s reach, improving access and flexibility on large workpieces.

Is specific maintenance required?

Only regular inspection and cleaning of the shield are needed. Check the microswitch and the smooth motion of the arm periodically.