Drawer Runners Compatible with Nobilia & Nolte Kitchens: Checking Nominal Length (NL)

The nominal length (NL) of a drawer runner denotes the exact length of the runner when fully closed and is the critical measurement for integrating replacement runners precisely into existing kitchen carcases.

Replacing defective or worn runner systems in fitted kitchens requires exact precision. Kitchen manufacturers such as Nobilia or Nolte often install modified fitting systems from major suppliers (such as Hettich or Blum) at the factory. When a runner snags, the soft-close fails, or the load capacity is no longer sufficient, a complete replacement of the runner is often the only professional solution. You do not necessarily have to use the kitchen manufacturer's exact original replacement part. Standardised fittings are fully compatible alternatives to factory-fitted runners, provided technical parameters such as nominal length, runner type, and hole pattern match.

This guide is aimed at fitters and experienced tradespeople who need to determine the exact matching replacement part for kitchen drawers using technical specifications.

Key Buying Criteria for Replacement Runners

To ensure compatibility with the existing kitchen cabinet carcase and the drawer box, four core parameters must be checked.

1. Nominal Length (NL) and Internal Carcase Depth

The nominal length is specified in millimetres and always refers to the closed runner. For standard kitchens, dimensions typically range between 250 mm - 550 mm. For example, if you are replacing a runner for a deep base unit, measure the old runner in its closed state. If your measurement is 398 mm, select the standard dimension of 400 mm. Matching drawer runners 400 mm or drawer runners 350 mm cover the most common carcase depths. Important for installation: the internal carcase depth (the internal clearance of the cabinet from the front edge to the back panel) must be at least equal to the nominal length plus 3 mm to 5 mm installation clearance.

2. Load Capacity and Dynamic Loading

Load capacity defines the weight the runner can permanently support when fully extended without bending. For a cutlery drawer, 30 kg is often sufficient. For wide pan drawers holding cast-iron pans or heavy crockery, a higher load capacity is essential. In these cases, heavy-duty drawer runners rated for 45 kg or more are required.

3. Carcase Width and Runner Type

The width of the kitchen unit indirectly dictates how sturdy the lateral guidance must be, especially under heavy loads. Specifically tailored solutions exist for standard sizes, whether it is a kitchen cabinet pull-out 60 cm for a traditional base unit or a narrow kitchen cabinet pull-out 20 cm for niches and spice racks.

4. System 32

Modern kitchen carcases are drilled according to System 32. This means the hole rows in the side panels have a vertical pitch of exactly 32 mm from one another. The standard distance from the carcase front edge to the first hole is 37 mm. Compatible replacement runners feature slotted holes and Euro screw holes (Ø 5 mm) that align precisely with this grid.

Types and Options at a Glance

The mechanism and positioning of the runner determine the gliding performance of the drawer.

Runner Types

• Undermount runner: The runner is fitted invisibly beneath the drawer bottom. This is the standard in nearly all modern kitchens from Nolte or Nobilia. Undermount drawer runners support the box from below and offer exceptionally high lateral stability. The connection between the box and the runner is usually made via front locking clips.
• Ball bearing runner: These telescopic runners are screwed to the side of the drawer or routed into a groove. They glide on small steel ball bearings and are extremely robust.
• Roller runner: A simple, typically white or brown system made of powder-coated steel with plastic rollers. Roller drawer runners are often found in older kitchens or in very light drawers.

Extension Length: Full Extension vs Single Extension

A full extension runner can be pulled 100% out of the carcase. The drawer box extends completely clear of the cabinet edge, allowing full access to the rearmost area. A single extension runner extends only to around 75%; the rear section of the drawer remains inside the cabinet. Upgrading to full extension drawer runners significantly improves ease of use.

Convenience Features: Soft-Close vs Tip-On

These two mechanisms are often confused, but in their pure form they are mutually exclusive because they utilise opposing physical forces:

• Soft-Close (damping): An integrated hydraulic or gas damper absorbs the momentum of the closing drawer and pulls it shut gently and silently over the last few centimetres. Soft-close drawer runners are essential for heavy fronts. A heavily loaded pan drawer without functioning damping slams shut like an unbraked car door in a gale. Similar systems can be found described as self-closing drawer runners, although basic self-closing often operates without a damping cylinder and merely pulls the box shut via spring force.
• Push-to-Open: This mechanism is used for handleless frontals. Pressing the front releases a tensioned spring that pushes the drawer open slightly. Push-to-open drawer runners require a small gap (approx. 2 mm - 3 mm) between the front and the carcase to provide the necessary trigger travel.

Which Profile for Which Scenario?

Selecting the correct replacement part depends on the cabinet type and the existing construction:

• Scenario 1: Replacement in a standard 50 cm base unit. If the old runner is catching, check whether it is side-mounted or bottom-mounted. If it is concealed, you need an undermount runner. For a kitchen cabinet pull-out 50 cm in a Nobilia kitchen, measure the length of the defective runner. If it measures 490 mm to 500 mm, a nominal length of 500 mm is the correct choice.
• Scenario 2: Narrow spice cabinet next to the cooker. Here space is restricted. A kitchen cabinet pull-out 15 cm or a kitchen cabinet pull-out 30 cm requires runners that occupy minimal lateral installation space. Undermount runners are ideal here as they maximise the usable internal drawer width.
• Scenario 3: Short drawers beneath the hob. Due to the installation depth of the hob and cable runs, these drawers are often shallower. Drawer runners 250 mm or drawer runners 300 mm are frequently used here. Make sure to check the heat resistance of the plastic components on the locking clip.

Installation Advice for Fitters

Replacing kitchen cabinet pull-outs requires a methodical approach.

Required tools:

• Cordless screwdriver
• Bits: PZ2 (Pozidriv) or TX15 (Torx) for Euro screws
• Folding rule or tape measure
• Bradawl / centre punch

Installation procedure:

1. Removal: Pull the drawer out fully. For undermount runners, squeeze the front locking clips (usually orange or green) under the bottom and lift the drawer upwards. For ball bearing runners, press the small plastic release lever inside the runner and pull the box forward and out.
2. Remove runners: Undo the fixing screws from the carcase. Note down exactly which hole in the System 32 row the old runner was screwed into.
3. Align new runner: Position the replacement runner in the same location. The frontmost screw is typically secured 37 mm behind the carcase front edge in the corresponding hole.
4. Fastening: For the 5 mm drillings, always use flat-head Euro screws to prevent the runner from snagging during travel. For extra stability, wood screws (Ø 3.5 mm or 4 mm) can be inserted into the smaller holes.
5. Reinsertion: Extend the runners fully, place the drawer box onto them, and slide it backwards until the locking clips audibly engage.

Additional Information: Replacement Hinges for Fitted Kitchens

Often, door hinges require servicing alongside drawer runners. In kitchens from Nolte or Nobilia, concealed cup hinges (the concealed hinge) are standard. The standard hole diameter for the cup in the door panel is 35 mm. When replacing, pay attention to the correct overlay type:

• Full overlay: The door fully covers the carcase side panel when closed.
• Half overlay: Two doors share a single carcase centre partition (half overlay).
• Inset: The door sits completely flush inside the carcase opening.

Here too, integrated damping is crucial. A modern concealed hinge features an integrated cylinder in the hinge arm that prevents the door from slamming shut.

FAQ – Frequently Asked Questions About Kitchen Drawer Runners

How do I measure the nominal length (NL) correctly?

Measure only the metal runner in its fully closed state from the frontmost to the rearmost edge. Do not measure the wooden drawer box itself, as it may be slightly shorter or longer than the runner depending on the system design.

Can I replace a single extension runner with a full extension runner?

Yes, this is straightforward as long as the nominal length, hole pattern (System 32), and installation width match. Upgrading to a full extension runner is a common improvement to provide easier access to the entire cabinet interior.

Are third-party replacement parts compatible with Nobilia or Nolte?

Yes. Major kitchen manufacturers use standardised carcase systems. Provided you correctly identify the measurements (nominal length in mm, load capacity in kg) and runner type (e.g. undermount runner), standardised fittings fit perfectly and serve as fully functional alternatives to manufacturer-specific spare parts.

Why is my soft-close drawer no longer closing properly?

In most cases, the pneumatic or hydraulic damping cylinder in the runner has failed (loss of fluid) or the engagement catch has broken off. In either case on undermount runners, the damper cannot usually be replaced individually; the complete runner must be replaced.

What is the difference between roller runners and ball bearing runners?

A roller runner operates on plastic wheels and is generally screwed from underneath to the drawer side. It has slightly more lateral play. A ball bearing runner (telescopic slide) runs on small steel ball bearings, is usually fitted directly to the side of the drawer, and provides significantly higher load capacity and precision.

Matching Products & Categories

To choose the exact replacement hardware required, browse the relevant specifications directly:

• Full extension drawer runners
• Undermount drawer runners
• Soft-close drawer runners
• Push-to-open drawer runners
• Heavy-duty drawer runners
• Kitchen cabinet pull-out 40 cm
• Kitchen cabinet pull-outs