| Business | Phone |
| Absolute Grinding & Mfg 2400 11th St, Rockford 61104 | (815) 964-1999 |
| Acme Grinding Inc 2932 Eastrock Dr, Rockford 61109 | (815) 399-5520 |
| Valley Jig Grinding Inc 2025 20th Ave, Rockford 61104 | (815) 398-4336 |
| Walern Form Grinding 4717 Colt Rd, Rockford 61109 | (815) 874-7000 |
| Stieg Grinding Corp 5015 28th Ave, Rockford 61109 | (815) 397-1533 |
| Class A Grinding 550 Grable St, Rockford 61109 | (815) 391-5099 |
| Sandray Precision Grinding 632 Grable St, Rockford 61109 | (815) 226-0660 |
| Ro-Pal Machining Inc 417 S Church St, Rockford 61101 | (815) 964-5894 |
| Real Precision Grinding Inc 1707 Magnolia St, Rockford 61104 | (815) 965-8369 |
| Eldridge Precision Inc 5310 Falcon Rd, Rockford 61109 | (815) 399-6211 |
| Ever Ready Pin & Mfg Inc 5560 International Dr, Rockford 61109 | (815) 874-4949 |
| Forest City Grinding Inc 4844 Stenstrom Rd, Rockford 61109 | (815) 874-2424 |
| Michelle Machine 1801 15th Ave, Rockford 61104 | (815) 226-0421 |