MZ841-1 SUS304 Stainless Steel Brushed Quarter-Turn Industrial Cabinet Lock with Connecting Rod Mechanism & Padlock Facility

Full Technical Specifications

• Model Number: MZ841-1
• Handle and Lock Panel Material: SUS304 stainless steel
• Cam, Base Plate and Support Material: Steel
• Surface Finish: Brushed SUS304 handle and lock panel; white zinc plated steel cam, base plate and support
• Operation Type: Quarter-turn (90° rotation) opening or closing, lock panel type
• Hand Configuration: Reversible (RL — compatible with left and right hand)
• Lock Panel Dimensions: 138.5mm height × 63.5mm width
• Lock Panel Mounting Holes: 4 pieces Φ5.6 through holes (28.5mm vertical spacing, 38+57.5mm horizontal)
• Handle Dimensions: 92mm length × 32mm width
• Base Plate Dimensions: 160.5mm height × 64mm width
• Base Plate Mounting Holes: 4 pieces Φ7 through holes (92mm vertical, 44.5mm, 32mm horizontal, 11mm)
• Base Plate Center Hole: Φ14.5mm
• Shaft Type: B8 (8mm diameter with flat)
• Connecting Rod System: Top and bottom connecting rods (29mm each), 14.5mm, 20mm dimensions
• Padlock Facility: Integrated padlock hole (5.5mm) for secondary security
• Weld Plate (焊接垫板): User self-fabricated, 9~32mm thickness range, Φ15mm hole
• Assembly Total Height: 155mm
• Support Bracket: Included for connecting rod guidance
• Rotation Angle: 90°
• Core Features: SUS304 brushed corrosion-resistant construction, connecting rod multi-point latching, integrated padlock facility, lock panel + base plate assembly, 90° quarter-turn operation, B8 shaft, heavy-duty industrial design, left/right hand reversible, optional weld plate

Core Product Features & Advantages

1 Premium SUS304 Stainless Steel Handle and Lock Panel

The handle and lock panel are fabricated from premium SUS304 stainless steel with a brushed finish, providing excellent corrosion resistance, oxidation resistance and hygienic easy-to-clean properties. The brushed surface creates a refined, professional metallic appearance that resists fingerprints and scratches, making it ideal for outdoor, coastal, medical, food processing and cleanroom applications where hygiene and corrosion resistance are critical.

2 Connecting Rod Mechanism for Multi-Point Latching

The innovative connecting rod (连杆) mechanism enables synchronized multi-point latching or remote cam actuation, providing enhanced security for large cabinet doors. The top and bottom connecting rods (29mm each) transfer the rotational motion of the handle to additional latching points, ensuring the door is secured at multiple locations for improved structural integrity, reduced door flex and enhanced protection against forced entry or vibration-induced opening.

3 Integrated Padlock Facility for Secondary Security

The integrated padlock facility (挂锁，5.5mm hole) allows operators to add a secondary padlock for additional security or to implement lockout/tagout (LOTO) procedures during maintenance. This feature is particularly valuable for industrial equipment where safety protocols require physical lockout to prevent unauthorized operation or accidental energization during servicing.

4 Comprehensive Lock Panel + Base Plate Assembly

The lock system includes a complete assembly with lock panel (138.5×63.5mm, 4×Φ5.6 mounting holes) mounted on the door exterior and base plate (160.5×64mm, 4×Φ7 mounting holes) mounted on the door interior, connected via the B8 shaft and connecting rod system. This comprehensive assembly ensures robust, stable installation on heavy cabinet doors, while the optional user-fabricated weld plate (9~32mm thickness) provides additional mounting flexibility for various door constructions.

5 White Zinc Plated Steel Components for Durability

The cam, base plate and support components are fabricated from robust steel with white zinc plating, providing excellent structural strength and corrosion protection for the internal mechanism. The white zinc plating ensures long-term durability in standard industrial environments, while the SUS304 exterior components provide superior corrosion resistance for exposed surfaces.

6 90° Quarter-Turn Operation with Left/Right Reversibility

The 90° quarter-turn mechanism enables quick, effortless opening and closing with a simple rotation of the ergonomic handle. The lock is reversible for both left-hand and right-hand door configurations (RL), reducing inventory requirements and simplifying procurement for projects with mixed door swing directions. The B8 shaft (8mm with flat) ensures positive, slip-free cam engagement for reliable latching.

Application Fields

1. Heavy electrical control cabinets, large low-voltage distribution boxes and industrial power equipment enclosures requiring multi-point latching
2. Large CNC machine tool guards, heavy automation equipment protective doors and industrial machinery access panels
3. Outdoor communication cabinets, 5G base station enclosures and weather-resistant signal transfer equipment (SUS304 corrosion resistance)
4. Energy storage battery boxes, solar inverter enclosures and renewable energy equipment requiring secure padlock capability
5. Outdoor monitoring equipment, weather-resistant instrument panels and coastal equipment enclosures
6. Food processing equipment, stainless steel sanitary cabinets and cleanroom facility enclosures (SUS304 hygienic surface)
7. Medical equipment housings, laboratory analytical instruments and pharmaceutical manufacturing enclosures
8. Marine and boat equipment, offshore installations and coastal industrial facilities (SUS304 salt spray resistance)
9. Industrial equipment requiring lockout/tagout (LOTO) procedures with padlock facility
10. Large, heavy cabinet doors requiring multi-point synchronized latching for enhanced security and structural integrity

Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

1. Determine the door hand configuration (left or right) — the lock is reversible for both
2. Prepare the door panel: cut the appropriate opening for the B8 shaft and mark positions for lock panel (4×Φ5.6) and base plate (4×Φ7) mounting holes
3. If using the optional weld plate (焊接垫板，user self-fabricated, 9~32mm thickness): fabricate the weld plate with Φ15mm hole, weld it to the door panel at the designated position
4. Mount the lock panel (SUS304 brushed) on the exterior of the door using 4×M5 screws through the Φ5.6 holes
5. Mount the base plate on the interior of the door using 4×M6 screws through the Φ7 holes, aligning with the B8 shaft
6. Install the connecting rods (连杆) to the base plate assembly, connecting the top and bottom latching points (29mm each)
7. Install the support brackets to guide the connecting rods
8. Install the appropriate B8 cam on the shaft, aligning the flat for positive engagement
9. Connect the cam to the connecting rod system for synchronized multi-point latching
10. Test the 90° quarter-turn operation to verify smooth locking, synchronized connecting rod movement and unlocking
11. Verify the padlock facility (5.5mm hole) functions correctly and a padlock can be inserted and removed
12. Adjust the connecting rod lengths or cam position if needed to achieve proper multi-point latching and consistent door compression

Installation Quantity Recommendation

• Standard large cabinet door: Install 1 MZ841-1 connecting rod lock system centered vertically, with connecting rods extending to top and bottom latching points
• Very tall or wide doors (>1800mm height): Consider 2 lock systems or additional connecting rod extensions for enhanced multi-point security
• Note: Ensure the connecting rods are properly sized and aligned for the specific cabinet door dimensions to achieve synchronized latching

Maintenance Instructions

1. Suitable for both indoor and outdoor environments; SUS304 handle and lock panel provide excellent corrosion resistance for coastal and mildly corrosive conditions
2. Wipe the brushed SUS304 handle and lock panel periodically with a soft dry or slightly damp microfiber cloth to remove dust, fingerprints and grease; avoid abrasive cleaners or scouring pads that may scratch the brushed finish
3. Apply a small amount of dry lubricant to the B8 shaft, cam and connecting rod pivots every six months to maintain smooth operation
4. Check all mounting screw tightness (4×M5 on lock panel, 4×M6 on base plate) quarterly to prevent loosening from vibration
5. Inspect the connecting rod system quarterly for any signs of bending, wear or misalignment; adjust or replace components if latching synchronization is compromised
6. Inspect the white zinc plated cam, base plate and support annually for any signs of corrosion or wear; touch up with zinc-rich paint if necessary
7. Inspect the SUS304 brushed surface annually for scratches or corrosion; for coastal applications, rinse with fresh water periodically to remove salt deposits
8. Test the 90° quarter-turn operation and padlock facility quarterly to verify smooth locking, synchronized connecting rod movement and reliable padlock engagement
9. Verify that the weld plate (if used) remains securely welded and the shaft alignment is maintained
10. Inspect the support brackets annually to ensure connecting rod guidance remains stable and friction-free

Product Summary

MZ841-1 is a heavy-duty quarter-turn industrial cabinet lock system manufactured from premium SUS304 stainless steel handle and lock panel with brushed finish, paired with durable white zinc plated steel cam, base plate and support components, featuring an innovative connecting rod mechanism for multi-point latching, integrated padlock facility for secondary security, 90° quarter-turn operation, B8 shaft and comprehensive lock panel + base plate assembly. Its SUS304 brushed construction provides premium corrosion resistance and hygienic appearance, the connecting rod system enables synchronized multi-point latching for large doors, the padlock facility supports lockout/tagout procedures, the comprehensive assembly ensures robust stable installation, and the left/right reversibility provides flexible configuration. With its heavy-duty performance, corrosion-resistant construction and multi-point security, it is an ideal locking solution for heavy electrical cabinets, large machinery enclosures, outdoor communication equipment, energy storage systems, food processing enclosures, medical devices, marine equipment and various industrial applications requiring secure multi-point latching with padlock capability and premium stainless steel construction.