Introducing…. Zafety Lug Lock ® Wheel Nut Security System
Design engineered for superior wheel nut security. Pairs together two lug nuts and ensures that resistance is applied continuously to the lug nuts to secure them from loosening. Reduces risk of potential wheel loss. Decreases the possibility of costly wheel damage.
Wheel nuts loosen as a result of temperature change, vibration and wheel surface condition. Loose wheel nuts result in an unbalanced load on a wheel end Unbalanced wheel load stresses studs and nuts and can lead to nut loosening, stud shearing and wheel damage
Zafety Lug Lock Zafety Lug Lock ® can reduce the risk of dangerous and costly wheel separation from loose lug nuts! Wheel fasteners are the single largest cause of wheel separation (66%) issues. Source: Proceeding of the Canadian Multidisciplinary Road Safety Conference XIV; June 27-30, 2004; Ottawa, Ontario
Zafety Lug Lock is designed to ensure w Zafety Lug Lock ® is designed to ensure wheel nuts remain secure prior to scheduled retorquing. Zafety Lug Lock Zafety Lug Lock ® creates resistance between 2 nuts minimizing their ability to rotate & loosen. Easily installs over 2 adjacent nuts. Use on standard or hub piloted 10 stud wheels with 1- 5/16 inch (33mm) nuts on 3- 1/2 inch centers and 4- 1/8 inch centers. Also designed for 8 stud wheels with 7/8 inch (22mm) and 1.0 inch (25mm) nuts on 2- 1/2 inch centers.
Pre-trip inspection requires confirmation of secure wheel lug nuts Rules apply to all public transit & commercial buses, trucks, trailers Zafety Lug Lock Zafety Lug Lock ® provides a clear, visual check of lug nut position* Zafety Lug Lock * The installation of Zafety Lug Lock ® does not preclude the need for standard safety & maintenance procedures
Fleet and Driver liability is a critical issue: NHTSA records show 1,000 reported accidents resulting from wheel loss in Many wheel loss incidents go unreported. $6.25 million civil award in a California personal injury accident from a wheel off
Benefits Zafety Lug Lock Nut can be checked for proper torque with Zafety Lug Lock ® installed (Exova Report # Rev 1, June 2010) Provides a clear visual check of lug nut security Reduces risk of wheel loss and potential liability for personal injury, loss of life or property damage Retains loose nut if stud breaks or shears off Reduces need for replacement lug nuts and reduces expensive wheel damage Reusable on replacement wheels
Features Design engineered plastic components with patented product design. Flexible and easy to install or remove for wheel end service - fits over two adjacent nuts. Standard formulation for wheel end brake temperatures up to F (149 0 C). High temperature formulation for severe braking with wheel end brake temperatures up to F (232 0 C). Resistant to continuous chemical exposure typically found in automotive and transportation applications. Available in custom colors
Features Zafety Lug Lock Zafety Lug Lock ® has a high strength to weight ratio The design has been proven in independent vibration testing to retain lug nuts from rotation in operating temperatures ranging from -40 ⁰ F (-40 ⁰ C ) to +122 ⁰ F (+50 ⁰ C). Field and track tested at high and low rotation levels over severe road conditions
Testing performed by Bodycote Testing Group (Exova) (Report # C0185, July 2008) Parameters: 1. Temperature testing at 25⁰C (77⁰F), 50⁰C (122⁰F) and - 40⁰C (-40⁰F) 2. Vibration test at 30 Hz and 3 g acceleration amplitude Test Procedure: 4 nuts tightened to spec ( ft-lbs) 2 nuts hand tightened Zafety Lug Lock Visual inspection of Zafety Lug Lock® units and nuts for any changes
Observations Zafety Lug Lock After testing at each temperature level a visual inspection indicated the Zafety Lug Lock ® units did not sustain any external damages or physical degradation After testing at each temperature level a visual inspection indicated no evidence of any nut looseness
LUG NUT POSITION AT 50⁰C (122⁰F) BEFORE VIBRATION TESTING LUG NUT POSITION AT 50⁰C (122 ⁰F) AFTER VIBRATION TESTING 2 HAND TIGHT LUG NUTS Figure 4A: Photos of Zafety Lug Lock prior to vibration test at 50 ⁰ C Figure 5A: Photos of Zafety Lug Lock after vibration test at 50 ⁰ C
Zafety Lug Lock Zafety Lug Lock ® will have a positive impact on fleet maintenance and safety: Reduced liability from risk of potential wheel loss. Lower maintenance costs from possible wheel damage and lug nut replacement. Nut Torque Check without removal saves time. Simple visual check on wheel nut position Allows fleets to visibly demonstrate proactive safety measures
For more information on Zafety Lug Lock ® Spectra Products Inc. Toronto, Ontario, Canada