SPIETH Expansion Gibs BFS
A Revolutionary Way to Guide Machine Slides
Positive guide with continuous preload and wear compensation capability
Hand scraping and fitting are eliminated
Inch and metric available
Inch Specs & CAD
BFS Series - Inch
BFS Series Expansion Gibs have built-in adjustment screws and must be bolted to the slide before they can be adjusted.
Special gibs can be made to suit your requirements.
| Expansion Gibs BFS - Inch |
Type |
H | B | L | *d1 | d2 | *d3 | d4 (mm) | d5 (mm) | d6 | l ±.005 | c | e ±.005 | k | t | Permissible Load of Gib in Lbs. | Adjustment Screw | "O" Ring |
| .38 | .75 | 3.0 | .093 | .156 | 4-40 | 5.0 | 2.5 | .10 | .75 | .500 | .50 | .086 | .080 | 650 | 10-24 | 2.5-1.2 | |
| .50 | .75 | 4.0 | .113 | .203 | 6-32 | 5.0 | 2.5 | .10 | 1.00 | .500 | .50 | .112 | .080 | 800 | 1/4-20 | 2.5-1.2 | |
| .62 | 1.00 | 6.0 | .152 | .234 | 10-24 | 5.0 | 2.5 | .10 | 1.50 | .687 | .68 | .138 | .080 | 1,350 | 3/8-16 | 2.5-1.2 | |
| .75 | 1.25 | 8.0 | .261 | .328 | 5/16-18 | 5.0 | 2.5 | .10 | 1.75 | .875 | .87 | .190 | .080 | 4,100 | 3/8-16 | 2.5-1.2 | |
| .88 | 1.50 | 10.0 | .261 | .406 | 5/16-18 | 7.6 | 3 | .12 | 2.12 | 1.062 | 1.062 | .250 | .118 | 6,300 | 1/2-13 | 3.9-1.8 | |
| 1.00 | 2.00 | 12.00 | .316 | .500 | 3/8-16 | 7.6 | 3 | .12 | 2.5 | 1.312 | 1.312 | .312 | .118 | 10,100 | 5/8-11 | 3.9-1.8 | |
Note:
The Spieth Gibs can be bolted to the side by screws through the clearance holes d1 or to the slide using the threaded holes d3.
Metric Specs & CAD
BFS Series - Metric
BFS Series Expansion Gibs have built-in adjustment screws and must be bolted to the slide before they can be adjusted.
Special gibs can be made to suit your requirements.
| Expansion Gibs BFS - Metric |
Type | H | B | L | *d1 | d2 | *d3 | d4 | d5 | d6 | l ±0.1 | c ±0.1 | e | k | t | Premissable Load of Gib in Lbs. | Adjustment Screw | "O" Ring |
| 6 | 12 | 41 | 2.5 | 4.8 | M3 | - | - | - | - | - | 6.5 | 1.7 | - | 200 | M3 x40 | - | |
| 8 | 14 | 56 | 2.5 | 4.8 | M3 | - | - | - | - | - | 8 | 1.7 | - | 430 | M4 x55 | - | |
| 10 | 18 | 66 | 3.3 | 5.9 | M4 | 5.0 | 2.5 | 2.5 | 15 | 10 | 10 | 2.2 | 2 | 630 | M5 x65 | 2.5-1.2 | |
| 12 | 20 | 76 | 3.3 | 5.9 | M4 | 5.0 | 2.5 | 2.5 | 17.5 | 11 | 11 | 2.2 | 2 | 800 | M6 x75 | 2.5-1.2 | |
| 12 | 20 | 110 | 3.3 | 5.9 | M4 | 5.0 | 2.5 | 2.5 | 26.5 | 11 | 11 | 2.2 | 2 | 1,600 | M6 x110 | 2.5-1.2 | |
| 15 | 25 | 100 | 4.3 | 7.4 | M5 | 5.0 | 2.5 | 2.5 | 22.2 | 15 | 15 | 3 | 2 | 1,400 | M8 x100 | 2.5-1.2 | |
| 15 | 30 | 150 | 6.8 | 10.4 | M8 | 5.0 | 2.5 | 2.5 | 34 | 18 | 18 | 4.5 | 2 | 4,000 | M8 x150 | 2.5-1.2 | |
| 20 | 35 | 200 | 6.8 | 10.4 | M8 | 7.6 | 3 | 3 | 44 | 22 | 22 | 4.5 | 3 | 6,500 | M12x200 | 3.9-1.8 | |
| 26 | 45 | 250 | 8.5 | 13.5 | M10 | 7.6 | 3 | 3 | 54 | 28 | 285 | 6 | 3 | 10,100 | M16x250 | 3.9-1.8 | |
Note:
The Spieth Gibs can be bolted to the side by screws through the clearance holes d1 or to the slide using the threaded holes d3.
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