Frame Kits and Hardware
Hangers, Rollers, and Carriages
The door may be the part you see, but the hanger assembly determines how smoothly, quietly, and reliably a pocket door moves. This guide explains the parts, how to compare them, and what to check before the wall is closed.
What Do These Terms Mean?
Manufacturers do not always use the same names. In pocket-door work, hanger, roller, and carriage may describe the entire rolling assembly or different parts of it. Product specifications are more dependable than the name alone.
Roller or Wheel
The wheel is the part that contacts the rail inside the track. Its shape must match the track profile. Wheel material, bearing quality, diameter, and axle strength affect noise, friction, and durability.
Carriage or Hanger
The carriage holds one or more wheels and travels inside or along the track. A pocket door normally uses two carriage assemblies so the load is supported near both ends of the door.
Hanger Bolt and Door Plate
An adjustable bolt connects each carriage to a plate fastened to the top of the door. The adjustment raises, lowers, and levels the panel. A locking feature keeps the connection secure but allows future door removal.
How Hanger Designs Compare
| Design | Where It May Fit | Advantages | What to Verify |
|---|---|---|---|
| Basic or single-wheel roller | Light residential doors and older systems | Simple and economical | Load rating, wheel wear, axle play, and replacement availability |
| Three-wheel ball-bearing hanger | Medium- to heavy-duty pocket-door systems | Smooth travel and distributed contact | The exact track profile and published capacity |
| Four-wheel ball-bearing hanger | Heavy, tall, wide, or frequently operated doors | Greater stability and load distribution | The rating of the complete system—not wheel count alone |
| Heavy-duty I-beam carriage | Very heavy or oversized architectural doors | High capacity and a robust running surface | Door minimums, maximum load, header support, and track series |
| Soft-close or soft-open assembly | Compatible systems with enough track length and travel | Slows end travel and reduces impact | Minimum door width and weight, trigger location, capacity, and access |
How to Select the Correct Hardware
- Calculate the complete door weight. Include glass, mirrors, applied panels, metal trim, pulls, and locks.
- Leave a capacity margin. Choose a complete track-and-hanger system rated above the actual load.
- Measure the door. Record its thickness, width, height, and top-edge construction.
- Consider frequency of use. A bathroom or office door used many times each day benefits from durable ball-bearing hardware.
- Match the track. Confirm the manufacturer, series, track profile, and carriage dimensions.
- Check attachment strength. Door plates and screws must anchor into solid material, not a weak or hollow top edge.
- Plan finished clearances. Allow for flooring, rugs, guides, trim, and the desired gap below the door.
- Decide on controlled motion early. Soft-close and soft-open devices require compatible track space and door travel.
- Plan future access. Removable trim or an accessible split jamb can make adjustment and replacement much easier.
- Follow one system’s instructions. Do not mix parts unless compatibility is specifically confirmed.
Examples of HBP Pocket-Door Hanger Systems
These current Hartford Building Products options show why the system name and capacity matter:
Series 2: 3-Wheel
HBP Series 2 ball-bearing hangers are rated for a door weighing up to 200 lb per pair. The replacement hardware bag includes two hangers, two door plates with screws, two nylon guides, a bumper, and an adjustment wrench.
Series 1: 4-Wheel
HBP Series 1 ball-bearing hangers are rated for a door weighing up to 250 lb per pair. They fit the HBP Series 1 track only and use locking door plates that permit adjustment and later removal.
Premium Series: 400 lb
For exceptionally heavy or large doors, HBP Premium frame kits use four-wheel precision ball- bearing hangers with an I-beam track and a system capacity of up to 400 lb. Check each model’s door-weight requirements when controlled closing is included.
Installation and Adjustment Sequence
- Inspect before enclosing the wall. Confirm that the track is straight, firmly supported, clean, and correct for the carriages.
- Install the door plates accurately. Position both plates according to the hardware instructions and fasten them into sound material in the door’s top edge.
- Insert the carriages and required stops. Some parts must enter from the end of the track before the track or frame becomes inaccessible.
- Hang and secure the door. Engage both hanger bolts or pins fully and activate every locking tab, clip, or retaining nut.
- Set the height and level. Adjust both hangers in small increments. Maintain floor clearance and even gaps at the jamb.
- Position the bottom guide. The guide should control side-to-side movement without pinching, scratching, or noticeably resisting the door.
- Set stops and controlled-motion parts. Prevent the door, pull, or carriage from striking the end of the track. Test soft-close or soft-open engagement at normal operating speed.
- Cycle the door repeatedly. Test the entire travel before drywall, wall panels, trim, or permanent jamb pieces restrict access.
Troubleshooting Common Problems
| Symptom | Likely Causes | What to Check |
|---|---|---|
| Door is hard to slide | Debris, rubbing guide, damaged bearing, bent track, or excess weight | Isolate the resistance; inspect both carriages, the full track, and bottom clearance |
| Door rubs the floor | Loose adjustment, shifted frame, or changed flooring | Track level, hanger height, locking hardware, and finished-floor clearance |
| Uneven gap at the jamb | Door is not level or jamb is not plumb | Adjust one hanger at a time, then recheck the jamb and guide |
| Rattle or side-to-side swing | Loose door plate, worn carriage, or mispositioned bottom guide | Plate screws, wheel play, guide clearance, and stop position |
| Door moves by itself | Track is out of level | Header support, fasteners, and track level across its full length |
| Soft close will not engage | Door outside weight range, insufficient travel, or incorrect trigger position | Model requirements, door weight, activation point, and component compatibility |
Maintenance That Protects the Hardware
- Keep drywall dust, sawdust, paint, joint compound, and construction debris out of the track.
- Listen for a new click, scrape, or rumble; a change in sound often appears before complete failure.
- Inspect accessible door plates, locking tabs, adjustment nuts, guides, stops, and fasteners.
- Clean accessible track surfaces with a dry cloth or vacuum attachment.
- Do not automatically add oil or grease. Sealed ball bearings may need no lubrication, and sticky products can collect dust. Follow the manufacturer’s instructions.
- Correct binding promptly. Forcing a dragging door increases stress on the wheels, axles, plates, track, and framing.
Choose Hardware as a Complete System
The best result comes from matching the door weight and dimensions to the track, hangers, plates, guides, stops, and optional controlled-motion parts before installation begins.