Medium Duty
(White with Blue Stripe)
Efficient Operating Range is 25% to 50% deflection of free length. Maximum deflection is 50%; Long Life deflection is 40%; Optimum Life deflection is 25%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.
Medium Heavy Duty
(White with Red Stripe)
Efficient Operating Range is 20% to 37% deflection of free length. Maximum deflection is 37%; Long Life deflection is 25%; Optimum Life deflection is 20%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.
Heavy Duty
(White with Yellow Stripe)
Efficient Operating Range is 15% to 30% deflection of free length. Maximum deflection is 30%; Long Life deflection is 20%; Optimum Life deflection is 15%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.
Extra Heavy Duty
(White with Green Stripe)
Efficient Operating Range is 15% to 25% deflection of free length. Maximum deflection is 25%; Long Life deflection is 20%; Optimum Life deflection is 15%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.
