Product Catalog
Conductive Soft Rubber Wheels (XY/XZ Lines) — Static-Control Comfort Ride for Electronics and Film Handling
Updated 2026-11
Conductive soft rubber wheels are the static-control branch of the X-tra soft rubber family: the same high-deflection comfort ride, compounded with carbon so the wheel bleeds static charge to ground through the hub and axle instead of letting it build on the cart. The manufacturer selection chart publishes two lines — XY, a flat-tread wheel at 200-675 lb over 3-8 in diameters, and XZ, a round-tread variant at 450-500 lb over 6-8 in — both rated -45 to +180 °F with the family’s High floor protection and Good rollability.
The ride is the point: a soft rubber tread deforms around debris and protects delicate floors, which is exactly what an electronics assembly or film-handling route wants — but the conductivity is a wheel property, not a grounding system. Resistance bands, the floor-to-ground path and verification belong to the wider ESD specification, covered on our ESD wheels page and in the knowledge guides linked below. Our supply path is own production plus outsourcing; standard constructions ship in 15-20 days and custom configurations in 30-40 days.
Specifications
| Type | Conductive X-tra soft rubber wheels (carbon-compounded soft rubber); XY flat tread, XZ round tread; plain bore or with bearings |
|---|---|
| XY line (manufacturer reference) | 200-675 lb at 3-8 in diameter, flat tread; floor protection High, rollability Good, chemical resistance Good; -45 to +180 °F |
| XZ line (manufacturer reference) | 450-500 lb at 6-8 in diameter, round tread; floor protection High, rollability Good, chemical resistance Good; -45 to +180 °F |
| Family context (manufacturer reference) | Non-conductive X-tra soft lines (XS flat, XR round) cover the same comfort-ride class without the static-control compound — the XY/XZ lines are the conductive branch |
| ESD class context (industry reference) | Conductive materials are defined by low electrical resistance and rapid charge bleed to ground — verify the resistance band against your ESD program, not against the wheel name |
| Lead time | 15–20 days (custom configurations 30–40 days) |
| MOQ | 200 pieces (standard catalog items ship in smaller quantities) |
| Warranty | 18 months |
XY and XZ are separate manufacturer lines — each published band stays its own row and is never merged into one family figure. The resistance value of your wheel at your humidity and wear state is a measurement item; the published chart carries capacity and temperature, not ohms.
Applications & Selection
Where a conductive soft rubber wheel earns its place
Two duties intersect here. The first is comfort: an X-tra soft rubber tread rolls quietly, shields fragile floors, and shrugs off small debris that would telegraph through a harder wheel into a precision instrument or a stacked film roll. The second is static: where carts collect charge by rolling across insulating floors — electronics assembly, photographic film, powder handling, solvent-adjacent areas — a conductive wheel continuously drains that charge instead of releasing it in a spark at the next touch point. Published class guidance defines conductive material by very low electrical resistance and rapid conduction to ground, which is why the wheel must be verified with an ohmmeter in service, not assumed from its color or name.
The boundary is equally practical: XY and XZ carry 200-675 lb and 450-500 lb respectively — comfort-ride loads, not tow-line loads. They are floor wheels; on angle-iron track or in high-heat zones the conductive requirement needs a different construction entirely. And a conductive wheel under a non-conductive cart (plastic deck, isolated swivel bearings) drains nothing — the whole path from deck to floor decides.
Selection points to settle before you RFQ
State the ESD requirement as a resistance band and a verification method, not as the word "conductive": your program’s band (conductive versus static-dissipative) may or may not match the wheel’s as-shipped resistance, and wear changes it over time. Then size normally: load per wheel with your safety divisor, diameter, tread type (XY flat for straight-line stability, XZ round for tracking and turning), bore and bearing, floor surface, and chemical exposure — the published lines are chemical-resistant Good and -45 to +180 °F, which covers cold rooms and wash-adjacent areas but not ovens.
Per-configuration ratings are confirmed at quotation; the published bands position the class. Standard constructions ship in 15-20 days, custom bores and compounds in 30-40 days, MOQ 200 pieces with smaller trial quantities of catalog items in some sizes.
Frequently Asked Questions
Conductive soft rubber wheels or ESD polyurethane wheels — which do I need?
They solve the same problem with different ride qualities. The conductive soft rubber lines (XY/XZ) give you floor protection and quiet rolling at light loads (200-675 lb); ESD polyurethane carries more load and resists flat-spotting under heavy static duty but is harder on fragile floors. If your route crosses finished floors or carries delicate instruments, soft rubber wins; if it carries 1,000 lb carts at speed, polyurethane does. Our ESD wheels page covers the resistance-band specification both must meet.
Does a conductive wheel alone make my cart ESD-safe?
No. The wheel is one segment of the grounding path: cart deck, casters, bearings and floor all sit in series with it. A conductive wheel under a plastic-sleeved stem or on a highly insulating floor drains nothing. Specify the resistance band end-to-end, verify it with measurements at the assembled cart, and re-verify as treads wear — the knowledge guides below give the band values and the verification method.
What is the difference between the XY and XZ lines?
Tread geometry and size. XY is a flat-tread wheel, published at 200-675 lb over 3-8 in diameters — the general choice for straight runs and maximum footprint. XZ is a round-tread wheel at 450-500 lb over 6-8 in — the round profile tracks and turns more easily, at the cost of a smaller contact patch. Both share the same -45 to +180 °F band and the same conductive compound.
Ordering & Documentation
Documents
Every order ships with a packing list and commercial invoice. Dimensional drawings (diameter, tread width, bore, hub length) are available on request; if your ESD program needs as-shipped resistance readings, ask with the RFQ so the measurement is made and recorded before shipment.
Quotation
A quotation needs: load per wheel with your safety divisor, diameter and tread type (XY flat or XZ round), bore and bearings, floor surface, temperature and chemical exposure, your ESD resistance band with the verification method, and quantity. The confirmed quotation states the rating for your configuration; the chart bands above are published line references, not the commitment.
Sample & supply
Standard constructions are produced to order with an MOQ of 200 pieces; smaller trial quantities of catalog items can ship in some sizes — ask with your RFQ. Lead time is 15-20 days standard, 30-40 days for custom bores or compounds. The usual validation for ESD duty is a trial cart measured end-to-end on the actual floor, then re-measured after two weeks of service.