Tri 6750Kg 9 Leaf Rocker Roller Trailer Spring Set & High 5/8 U Bolt Kit. 7mm Thick Springs!

9 LEAF 6750KG HEAVY DUTY TRI AXLE ROCKER ROLLER SPRING SET.
WITH TRI AXLE HIGH TENSILE U BOLT KIT
SHOT PEENED SPRINGS

All Coffs Metal Works rocker roller springs are 7mm thick giving on average an extra 750kg pay load per tri axle set.  All Coffs Metal Works's roller bushes are solid steel and not plastic. All shackle spring bolts (roller and eye) are high tensile and all greasable.

6X 60MM X 7MM BLACK FINISH 9 LEAF ROCKER ROLLER SPRINGS (SPRINGS ARE SHOT PEENED FOR EXTRA STRENGTH)
2X FRONT 60X8MM HANGERS
2X REAR 60X8MM HANGERS
4X CENTRE 50X8MM HANGERS
4X PAINTED CENTRE ROCKER ARMS
6X SOLID STEEL 5/8” BUSHES
12X 5/8” GREASABLE SHACKLE PINS AND NYLOC NUTS
4X ¾” GREASABLE CENTRE SHACKLE PINS WITH CASTLE NUTS AND SPLIT PINS

TRI AXLE U BOLT KIT INCLUDES
12X 45MM X 170MM SQUARE, 50MM X 170MM SQUARE, 63MM X 170MM SQUARE OR 65MM X 170MM ROUND 5/8" HIGH TENSILE U BOLTS WITH SPRING WASHERS AND NUTS (5/8 BSW) ZINC PLATED
6X 80 X 70 X 8MM SLOTTED OVERSIZED FISH PLATES TO SUIT U BOLT THICKNESS SUPPLIED
6X AXLE PADS
PLEASE SPECIFY WHICH U BOLTS YOU REQUIRE ON ORDERING

FULL ROCKER ROLLER SET WILL COME ASSEMBLED

On ordering all springs will come assembled to suit 14" wheels & tyres with an 870mm axle centres.  If the requirement is for 15"/16" 970mm centres then its simply swap the front and rear springs of the same side which opens up the axle centres from 870mm to 970mm (options in main pictures)

SHOT PEENING
Shot peening is a cold working process used to produce a compressive residual stress layer and modify mechanical properties of metals and composites. It entails impacting a surface with shot with force sufficient to create plastic deformation. Shot peening is often called for in aircraft repairs to relieve tensile stresses built up in the grinding process and replace them with beneficial compressive stresses.