A fluid isolating pump, comprising: a cage comprising: a front plate having a front opening, a back plate having a back opening, and a plurality of connecting rods, each connecting rod having a front end attached to the front plate and a back end attached to the back plate; a plurality of roller assemblies, each roller assembly coupled to a corresponding connecting rod of the cage, each roller assembly comprising: one or more arms (910A, 910B) rotatably attached to the corresponding connecting rod, a connecting bar coupled to the one or more arms (910A, 910B), one or more levers (915A, 915B) rotatably attached to the corresponding connecting rod, one or more suspensions (920A, 920B), each suspension (920A, 920B) coupled to at least one arm (910A, 910B) and to at least one lever (915A, 915B), and a roller coupled to the one or more levers (915A, 915B); a cam plate coupled to the connecting bar of each roller assembly of the plurality of roller assemblies, the cam plate comprising: a plurality of openings, the openings having a first end and a second end, wherein the connecting rod of each roller assembly is configured to slide from the first end of the opening to the second end of a corresponding opening, and a non-rotating central shaft, the non-rotating central shaft axially aligned with the cage, the non-rotating central shaft for supporting a consumable. a cage comprising: a front plate having a front opening, a back plate having a back opening, and a plurality of connecting rods, each connecting rod having a front end attached to the front plate and a back end attached to the back plate; a front plate having a front opening, a back plate having a back opening, and a plurality of connecting rods, each connecting rod having a front end attached to the front plate and a back end attached to the back plate; a plurality of roller assemblies, each roller assembly coupled to a corresponding connecting rod of the cage, each roller assembly comprising: one or more arms (910A, 910B) rotatably attached to the corresponding connecting rod, a connecting bar coupled to the one or more arms (910A, 910B), one or more levers (915A, 915B) rotatably attached to the corresponding connecting rod, one or more suspensions (920A, 920B), each suspension (920A, 920B) coupled to at least one arm (910A, 910B) and to at least one lever (915A, 915B), and a roller coupled to the one or more levers (915A, 915B); one or more arms (910A, 910B) rotatably attached to the corresponding connecting rod, a connecting bar coupled to the one or more arms (910A, 910B), one or more levers (915A, 915B) rotatably attached to the corresponding connecting rod, one or more suspensions (920A, 920B), each suspension (920A, 920B) coupled to at least one arm (910A, 910B) and to at least one lever (915A, 915B), and a roller coupled to the one or more levers (915A, 915B); a cam plate coupled to the connecting bar of each roller assembly of the plurality of roller assemblies, the cam plate comprising: a plurality of openings, the openings having a first end and a second end, wherein the connecting rod of each roller assembly is configured to slide from the first end of the opening to the second end of a corresponding opening, and a non-rotating central shaft, the non-rotating central shaft axially aligned with the cage, the non-rotating central shaft for supporting a consumable.