The MSA Dyna-Lock Self-Retracting Lanyards (SRL) are fast-acting fall arresters that limit free-fall

distance, deceleration distance and fall arrest forces while allowing user freedom of movement.

The Dyna-Lock SRL is ideal for climbing applications where vertical mobility is needed.

The Dyna-Lock SRL has a 4.5 feet per second locking speed. A built-in shock absorber limits fall

arrest forces to under 900 lbf. Three continuously moving independent braking mechanisms

prevent freezing in icy or corrosive conditions. Available with 3/16 inch galvanized or stainless

steel wire rope, or 1 inch wide nylon webbing. A forged steel, zinc-plated, self-locking swivel

snaphook is present on each unit with a load indicator that activates and alerts the user when

the Dyna-Lock SRL has been impact loaded. The Roughneck model incorporates a black

corrosion-resistant coating designed for severe environmental conditions. Meets ANSI Z359.1,

ANSI A10.14, and applicable OSHA standards. Models with CSA part numbers are CSA certified.

NOTE: This "no re-certification" policy does not mean that routine inspections do not need to be performed on MSA mechanical units. All users of MSA mechanical products are still required to perform a pre-use inspection and a formal inspection of each mechanical unit in accordance with the user instructions, and as outlined in OSHA regulations, ANSI standards, and CSA standards. CSA standards require an annual re-certification for mechanical products two years from date of manufacture.

Capacity (working load)

For 20’ web, 30’, 50’, 70’, and 95’ cable Dyna-Lock Models:

• Maximum: 400 lbs (181 kg)

• Minimum: 75 lbs (34 kg)

For 20’ cable Dyna-Lock, Short-Stop, and Sure-Lock Models:

• Maximum: 310 lbs (140 kg)

• Minimum: 75 lbs (34 kg)

Arrest Force

• 75 - 310 lbs < 900 lbf (4 kN)

• 311 - 400 lbs < 1800 lbf (8 kN)

Arrest Distance

• 75 - 310 lbs < 40 in (101.6 cm)

• 311 - 400 lbs < 54 in (137 cm)

* 310 lbs maximum capacity