Three wickets apiece from Matthew Liver and Dan Chambers plus knocks from Craig Heywood and Luke Phillips helped sink Morecambe 2nds at Lune Road.
Danny Welbourne opted to bowl first and the seamers did the damage for Lancaster early on as Steve Armstrong and Matt Liver made early in-roads.
Elliot Mason then got in on the act removing Steven Fisher and the evergreen Gulam Maje for 20. Liver and Armstrong kept up the pressure taking regular wickets with Reuben Orr taking three behind the stumps.
Dan Chambers helped mop up the tail with 3 scalps to finish with 3-28 from his 8 over spell.
The chase started well for Lancaster with Craig Heywood looking in good touch in his 31. Danny Welbourne and Sam Reddick made starts but couldn't go on while Chambers looked secure at number four with 24.
Despite late wickets, Luke Phillips helped steady the ship and secure the win with a composed 29 not out as Lancaster got over the line with three wickets to spare.