Mining & CrushersJaw Crusher
Jaw crusher toggle block / toggle seat (cast)
Toggle transmits crushing force – high compressive load. Cast steel (not Mn) – high compressive strength required not wear resistance.

Specifications
Material
Cast steel ASTM A27 Gr70-40 or A148 Gr80-50
Material Class
Cast Steel
Applicable Standards
ASTM A27 Gr70
Common Processes
Resin sand; heat treat (N&T)
NDT & Inspection
MT; dimensional; hardness; VT
Typical Specs & Notes
Toggle transmits crushing force – high compressive load. Cast steel (not Mn) – high compressive strength required not wear resistance.
⚠ Caveats
Cast steel (not Mn) – high compressive strength required not wear resistance.