DEF Series Telescopic Linear Guides
The DE Series is a high capacity telescopic rail assembly where the stroke is approximately equal to the overall length of the rail assembly. This series is constructed with cold drawn steel rails that are hardened to provide long life even in equipment with highly repetitive motion. The bearing system consists of large diameter, caged balls. The large balls and hardened steel raceways result in high load capacities and long product life.
Threaded Mounting Holes
The DEF Series with threaded attachment holes in each rail is the most popular product.
Attaching Hole Size
| Metric Thread | |
|---|---|
| DEF28 Series | M5 |
| DEF43 Series | M8 |
Popular Sizes are DEF28 and DEF43
The 28 and 43 in the part number indicates the overall height of the assembly cross-section in millimeters. Basically the 43 series is the larger heavier duty version of the two sizes. It has a high load carrying capacity.
DEF Product Technical Data
Each telescopic assembly consists of three main structural pieces, two small rails on each side of the “I-beam” shaped intermediate element. The smaller rails for the DEF product have drilled and tapped holes spaced every 80 mm for easy attachment.
- Ball Based Design, 4 Point Contact
- Carbon Steel, Induction Hardened Raceways
- Electrolytic Zinc Plated Surface, Matte Silver Color
- Rail Hole Spacing every 80 mm (3.15 inches)
- Universal Mounting (i.e., left or right side)
- Fully Telescoping Assembly (i.e.,100%)
- Typically used in pairs (one on each side)
Typical Lead-time is 7-9 weeks for small quantities
Size 28
Lubricant Requirements
Periodically applying a small amount of an NLGI #2 lithium-based grease with no solid additives such as MoS2 (molybdenum disulfide) along the rail ball track is recommended for quiet operation and long life.
DEF Series Size 28 Telescopic Linear Guides
Available Options
| SKU | Closed Length |
|---|---|
| DEF28-0130-148 | 130 mm |
| DEF28-0210-232 | 210 mm |
| DEF28-0290-296 | 290 mm |
| DEF28-0370-380 | 370 mm |
| DEF28-0450-464 | 450 mm |
| DEF28-0530-548 | 530 mm |
| DEF28-0610-633 | 610 mm |
| DEF28-0690-717 | 690 mm |
| DEF28-0770-801 | 770 mm |
| DEF28-0850-866 | 850 mm |
| DEF28-0930-950 | 930 mm |
| DEF28-1010-1034 | 1010 mm |
| DEF28-1090-1118 | 1090 mm |
| DEF28-1170-1202 | 1170 mm |
Size 43
Lubricant Requirements
Periodically applying a small amount of an NLGI #2 lithium-based grease with no solid additives such as MoS2 (molybdenum disulfide) along the rail ball track is recommended for quiet operation and long life.
DEF Series Size 43 Telescopic Linear Guides
Available Options
| SKU | Closed Length |
|---|---|
| DEF43-210-246 | 210 mm |
| DEF43-290-316 | 290 mm |
| DEF43-370-416 | 370 mm |
| DEF43-450-484 | 450 mm |
| DEF43-530-556 | 530 mm |
| DEF43-610-626 | 610 mm |
| DEF43-690-726 | 690 mm |
| DEF43-770-796 | 770 mm |
| DEF43-850-866 | 850 mm |
| DEF43-930-966 | 930 mm |
| DEF43-1010-1036 | 1010 mm |
| DEF43-1090-1106 | 1090 mm |
| DEF43-1170-1206 | 1170 mm |
| DEF43-1250-1276 | 1250 mm |
| DEF43-1330-1376 | 1330 mm |
| DEF43-1410-1446 | 1410 mm |
| DEF43-1490-1516 | 1490 mm |
| DEF43-1570-1586 | 1570 mm |
| DEF43-1650-1686 | 1650 mm |
| DEF43-1730-1756 | 1730 mm |
| DEF43-1810-1856 | 1810 mm |
| DEF43-1890-1926 | 1890 mm |
| DEF43-1970-2026 | 1970 mm |
Other Configurations
There are three versions available: DSS, DSB, and DSD. The DSS version that is a conventional single stroke system. The DSD version is a bidirectional or double stroke system. DSB version incorporates a locking system for the closed or retracted position.
The DEF Series Telescopic Linear Guides is also available in our Online Store
-
DEF28 Fully Telescopic
Price range: $264.00 through $902.00 -
DEF43 Fully Telescopic
Price range: $408.00 through $2,035.00
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