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Southco R4 – Rotary Latches

The newest addition to Southco’s R4 Series features a compact design and multiple points of actuation. These robust latching solutions for doors and panels of heavy-duty equipment and vehicles combine rotary-action security with push-to-close convenience. Their compact design provides concealed operation, while tolerating misalignment on closing, engaging easily with low closing force, and latching firmly with a snug, secure fit.

Product Features and Benefits

Durable materials, corrosion-resistant plating, and robust construction make these latches suitable for demanding environments. Easy operating mechanism and versatile actuation options make latches easy to adapt to a variety of installations.

  • Compact latch envelope and cross-section fits thin-profile doors, minimizes protrusion within the enclosure
  • Forgiving mating tolerance accommodates misalignment and flexing of long door panels or hoods
  • In the closed position, latch fully envelopes striker bolt for secure grip and protection
  • All-metal construction for durable, long-lasting performance
  • Hardened steel cams and triggers provide durable latching engagement
  • Stainless steel styles for use in marine and off-highway applications
  • Corrosion-resistant finish minimizes danger of rust interfering with latch operation or staining door panel
  • Many styles compatible with single and multi-point remote actuation using cables or mechanical linkage

Available Options

  • Separate models available for right-hand and left-hand opening styles
  • Available in choice of threaded and through-hole mounting styles
  • Electronically actuated rotary latch models also available
  • Two-stage cam version prevents false latching condition
  • Single and two-stage cam versions with integrated bumper option to eliminate noise and vibration
  • Dual point option allows the rotary latch to be actuated from different points

Standards and Specifications

  • Heavy-duty style latch meets Federal Motor Vehicle Safety Standard 206 for crash test performance when installed with optional supplemental bracket
  • Stainless steel styles (304 SS) meet marine salt spray requirement
  • Maximum dynamic working load for R4-10 Series is 100 N (22 lb)
  • Maximum dynamic working load for R4-20 Series is 200 N (45 lb)
  • Maximum dynamic working load for R4-30 and R4-50 Series is 222 N (50 lb)

Industry Applications

  • Bus, Coach & RV
  • Enclosures
  • Industrial Machinery
  • Med & Heavy Truck
  • Off-Highway – Construction, Farm Vehicles

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