Push Open 45mm Ball Bearing Telescopic Drawer Slides - Furniture Cabinet Hardware

The 4501F series push open drawer slides represent a three-section full extension telescopic rail system designed for handleless cabinetry and furniture applications. Built with cold rolled steel base material, these slides integrate a spring-loaded push-to-open mechanism that releases the drawer with a single inward press, eliminating the need for external handles or pulls. Each pair operates with double-row solid steel ball bearings housed within precision-formed rail channels, delivering consistent sliding motion across the full travel distance.

This product line is available in six nominal lengths ranging from 300 mm (12 inch) to 550 mm (22 inch), with corresponding travel distances that match or approach full extension ratios. Three material thickness configurations are offered: 1.0×1.0×1.2 mm, 1.1×1.1×1.4 mm, and 1.2×1.2×1.5 mm, allowing commercial procurement teams to select appropriate load ratings per project requirements. Standard surface finishes include electroplated blue zinc and electroplated black, both applied to provide corrosion resistance for indoor furniture environments. Rated load capacity falls within 25-35 kg per pair, depending on selected thickness and mounting configuration.

Push Open Mechanism and Structural Design

	Spring-Loaded Rebound System The push-open function operates through a mechanical spring assembly integrated into the rear section of the outer rail. When the drawer is pushed inward by approximately 10-15 mm, the latch mechanism disengages and the spring assembly propels the drawer outward to a partially open position, allowing users to grasp and extend the drawer fully without handle hardware. This design supports handleless furniture aesthetics commonly specified in modern kitchen, office, and retail cabinet projects.
Triple-Rail Full Extension Architecture Each slide assembly consists of three interlocking steel rails: an outer member mounted to the cabinet side, a middle rail, and an inner member attached to the drawer side. This three-section configuration enables full extension travel, meaning the drawer extends to a distance equal to its nominal slide length, providing complete access to the entire drawer interior. Full extension design is particularly relevant for commercial storage applications where full drawer access improves inventory retrieval and space utilization.
	Double-Row Ball Bearing System Two parallel rows of solid steel balls run within formed raceways on both upper and lower edges of the middle rail. This dual-bearing arrangement distributes the vertical load across more contact points, supporting the 25-35 kg rated capacity while maintaining smooth travel. The ball bearing design also reduces operational friction compared with roller or friction-slide alternatives, contributing to consistent performance over repeated opening and closing cycles.

45mm Telescopic Drawer Slides Specifications

General Product Parameters

Dimensional Specifications by Size

Mounting Hole Dimensions

The slide profile measures 45.3 ± 0.2 mm in overall height with a 12.7 ± 0.1 mm front profile dimension. Mounting slots include elongated holes measuring 4.6×9.5 mm and 4.6×10.5 mm, providing lateral adjustment during installation. Key hole spacing dimensions are marked as A, B, C, D, and E in the technical drawing, with values listed in the dimensional table above for each corresponding slide length.

Push Release Drawer Slides Applications

Furniture and Cabinet Manufacturing

These push-open slides are specified for handleless kitchen cabinetry, vanity units, and wardrobe drawers where flush front panels are required. Furniture manufacturers working on contemporary residential and hospitality projects select this mechanism to achieve seamless cabinet front aesthetics without visible hardware. The full extension feature supports deep drawer designs used in pantry storage, cutlery drawers, and pull-out pantry systems.

Office and Commercial Furniture

For office furniture including filing cabinets, desk pedestals, and storage pedestals, the push-open design supports clean workstation aesthetics. In commercial office fit-outs and co-working spaces, handleless drawer fronts reduce catch points and contribute to streamlined visual design. The 25-35 kg load range accommodates standard office supplies, documents, and stationery storage requirements.

Industrial and Retail Storage

Industrial cabinetry, tool chests, and retail display drawers also utilize this slide type where handle-free front panels are preferred for visual uniformity. In workshop and maintenance environments, the push-release mechanism allows operators to open drawers while holding tools or parts, supporting efficiency in commercial operations where hand occupancy is common.

Installation and Mounting Information

Side Mount Configuration

The 4501F series is designed for side-mounted installation, with the outer rail attached to the cabinet side panel and the inner rail fixed to the drawer side. Required side clearance is 12.7 mm per side, matching the standard 45 mm slide category. Elongated mounting slots allow for ± adjustment during installation, compensating for minor panel variations in production environments.

Disassembly Feature

A removable nylon locking clip is integrated into the slide assembly, enabling the inner rail to be disconnected from the middle and outer rails without tools. This feature simplifies installation by allowing cabinet and drawer components to be mounted separately, then assembled on site. The clip design also supports maintenance and replacement procedures in installed furniture.

FAQ

What is the difference between push-open slides and standard drawer slides?

Push-open slides incorporate a spring-loaded rebound mechanism that ejects the drawer when pressed inward, removing the need for handles or pulls. Standard drawer slides require manual pulling via a handle or grip point. Both types use the same ball bearing telescopic structure for extension.

Can these push-open slides be used for heavy drawer applications?

The rated load capacity is 25-35 kg per pair, depending on the selected material thickness. For drawers exceeding this weight range, consider selecting the 1.2×1.2×1.5 mm thickness configuration or evaluating heavy-duty slide alternatives. Load ratings assume proper side-mount installation and even weight distribution.

Are custom lengths or finishes available for commercial orders?

Standard production covers lengths from 300 mm to 550 mm in 50 mm increments. Custom length requirements for volume orders can be discussed with the sales team. Available standard finishes are electroplated blue zinc and electroplated black; other surface treatments may be available for qualifying order quantities.

What clearance is required for installing 45mm push-open drawer slides?

Side mount installation requires 12.7 mm of clearance on each side between the drawer box and the cabinet opening. This dimension aligns with standard 45 mm slide industry conventions. The push mechanism adds no additional depth requirement beyond standard three-section slide dimensions.

How does the push-open mechanism perform over repeated use?

The rebound system uses a mechanical spring assembly tested for repeated actuation cycles. Performance consistency depends on load conditions and installation quality. For high-frequency commercial applications such as retail display cabinets, specify the thicker material configurations to support extended service life.