DIN Standard Oil-Free Plain Guide Bushings LDBZ

Oil-free plain guide bushings (LDBZ) are used in injection and stamping tooling where the die set must stay precisely aligned while keeping the sliding system clean. In leader/ejector leader blocks and guide posts arrangements, these bushings support smooth, low-friction movement without requiring lubrication.

• Automotive press die sets: bonded installation helps resist micro-movement during repeated press cycles, supporting stable die alignment and consistent stroke.
• Packaging and appliance forming dies: the oil-free running behavior is suited to processes that require cleaner work zones and reduced maintenance downtime.
• High-cycle manufacturing fixtures: the LDBZ variant is selected to maintain a consistent guide fit across operating cycles, improving repeatability of part positioning.

The Loctite adhesive bonding approach makes this bushing variant well suited for die housings where secure, repeatable mounting is critical, helping maintain alignment over long service intervals.

The provided product data specifies the LDBZ design and installation method (oil-free operation with Loctite adhesive bonding) but does not list a specific steel grade or heat-treatment condition. As a result, material-property figures such as HRC hardness, nitriding, or quench-and-temper state cannot be stated from the available specifications.

For selection in precision leader/bushing applications, engineers should verify the supplied material grade (e.g., equivalent to common die steels such as H13/1.2344) and the final surface treatment through the manufacturer datasheet or CoA for wear resistance and toughness targets.

• Hardness vs. toughness trade-off: higher hardness improves wear resistance for sliding guidance, while lower hardness generally improves impact toughness against misalignment or shock loading.
• Process verification: confirm whether the bushing is surface-treated (e.g., nitriding/coating) before finalizing expected guide life.

Select the bushing inner diameter d and length L to match the corresponding leader/guide components in your die set. This product offers d = 20 ~ 50 mm and L in fixed options: 50, 60, 80, 100, 120 mm.

• Match inner diameter (d): choose the closest d value that corresponds to the guide shaft/leader diameter used in your die design.
• Match guidance length (L): ensure L provides the required bearing length for stable alignment and load distribution in the guide zone.
• Fit & tolerance considerations: verify the functional clearance between leader and bushing in your drawings; use the manufacturer’s dimensional tolerances for slip fit/transition fit decisions.

Because d and L are specified as variable and discrete options, treat them as configurable selections for your mold cavity/core and leader geometry, while confirming tolerances and bonded installation fit constraints with the supplier.