Product Catalog
Swivel Casters — 360° Steering, Swivel Lead Geometry and Configuration Rules
Updated 2026-11
A swivel caster steers: the wheel assembly rotates on a vertical kingpin or kingpinless raceway and follows the direction of push or pull, which is the whole reason movable equipment turns at all. The published comparison with rigid casters frames the trade precisely — swivels allow sideways and turning motion but carry higher push force at the start of motion, because the wheel has to re-orient before it rolls; rigids track straight with lower straight-line effort but cannot turn independently. That is why the standard published cart configuration is two swivel and two rigid: swivels handle the turns, rigids handle straight-line stability.
Within the class, one geometry number does most of the work: swivel lead — the published definition is the distance between the centermost point of the swivel bearing and the wheel axle. Long lead rolls smoother and resists flutter; short lead turns tighter and carries heavier load more safely. Our line covers kingpin and kingpinless swivel casters in plate and stem mounts across the RM series tiers, through own production and outsourcing; per-configuration ratings are confirmed at quotation, lead time 15-20 days standard and 30-40 days custom.
Specifications
| Type | Swivel casters, kingpin and kingpinless raceways; top-plate and stem mounts; brake, total-lock and swivel-lock options |
|---|---|
| Steering behaviour (industry reference) | 360-degree rotation on a vertical kingpin or kingpinless raceway; follows the direction of push or pull; higher push force at the start of motion while the wheel re-orients |
| Swivel lead (industry reference) | Distance between the centermost point of the swivel bearing and the wheel axle; published examples run from half an inch to 2 inches — long lead rolls smoother and reduces flutter; short lead turns tighter and handles heavier loads |
| Configuration rule (industry reference) | Standard cart layout: 2 swivel + 2 rigid; all-swivel for maximum maneuverability; long carts, towed trains and powered carts use different combinations |
| Load practice (industry reference) | Match capacity per caster to total load divided by 3 — one caster may be airborne on uneven ground |
| Lead time | 15–20 days (custom configurations 30–40 days) |
| MOQ | 200 pieces (standard catalog items ship in smaller quantities) |
| Warranty | 18 months |
Swivel lead examples, configuration and load-division rules above are published industry references, not tenant family ratings. Ratings, swivel radius and lead dimensions for your configuration are stated on the quotation.
Applications & Selection
Swivel lead: the number that decides how the caster behaves
Two swivel casters with the same wheel and rating can behave completely differently, and the difference is published geometry. Swivel lead — the offset between the swivel bearing center and the wheel axle — trades three behaviors against each other. A long lead lets the wheel trail the swivel axle naturally: published guidance describes less resistance, smoother rolling, and a reduced risk of caster flutter, the side-to-side oscillation that appears when a wheel cannot settle behind its bearing. A short lead does the opposite: it turns tighter for narrow aisles and hallways, and it carries heavier loads more safely, because a long offset exposes the caster to bending stress under load.
The published examples make the scale concrete — swivel leads in the market run from about half an inch to 2 inches, and even a short lead measurably changes performance. Practically: picking carts and light equipment favor longer leads for smooth, low-effort tracking; heavy industrial carts and tight-aisle equipment specify shorter leads. When a cart shimmies at speed, the lead is the first spec to check — flutter is a geometry symptom before it is a quality defect.
Configuration: how many swivels, where
The published configuration rule is the industry standard for a reason: two swivel and two rigid balances maneuverability against straight-line stability, with swivels placed on the pushing or steering end. All-swivel layouts turn in their own length for crowded floors but wander on long straights and towlines; all-rigid tracks perfectly but cannot steer. Long carts, tow-pulled trains and powered vehicles each need their own combination, which is why published guidance treats configuration as a decision, not a default.
Size the casters with the published load practice — capacity per caster matched to total load divided by three, because an uneven floor can lift one caster clear — then set the configuration by travel pattern: route length, aisle width, turn frequency and towing method. Kingpinless raceways earn their place on shock and towline duty; standard kingpin swivels carry lighter general duty economically.
Our RM series tiers cover the range from 150 kg medium to extreme-duty forged lines through own production and outsourcing, MOQ 200 pieces, 15-20 days standard and 30-40 days custom. Per-configuration ratings, swivel radius and lead dimensions are confirmed at quotation.
Frequently Asked Questions
Why does my cart shimmy or flutter at speed?
Flutter is a swivel-geometry symptom: published guidance describes it as a swivel caster wheel oscillating side to side instead of trailing forward, and it is most common when the swivel lead is too long for the speed and load — or worn raceways let the trail wander. The published relationship is that a longer lead rolls more smoothly but reduces flutter resistance only up to the point where speed outruns the trail. Check lead against duty first; if the geometry matches the duty, inspect the swivel raceway and bearings for wear.
Should all four casters be swivel?
Usually not. The published standard configuration is two swivel plus two rigid: swivels steer, rigids track straight, and the combination is stable on long runs while still turning. All-swivel makes sense where the equipment turns within its own length — tight workshops, crowded kitchens — at the cost of wander on straights and higher steering attention. All-rigid suits towed or straight-line-only movement. Match the layout to the route: turn frequency and travel length decide, not habit.
What should my swivel caster RFQ include?
Total load with the divide-by-three per-caster figure, wheel diameter and tread, mount interface (plate pattern or stem), swivel lead or radius requirement if the aisle geometry demands one, kingpin vs kingpinless preference based on shock and towline duty, brake type if needed, floor and environment, and quantity. Ask for swivel radius and lead dimensions on the quotation drawing — they decide turning clearance and flutter behavior and are the two numbers most often left unstated.
Ordering & Documentation
Documents
Every order ships with a packing list and commercial invoice. Dimensional drawings (top plate and bolt pattern or stem, overall height, swivel radius and lead) are available on request so turning clearances can be checked against aisle and equipment geometry before production.
Quotation
A quotation needs: per-caster load, wheel specification, mount interface, raceway type (kingpin / kingpinless), brake option, floor and environment, and quantity. The confirmed quotation states the rating and the swivel geometry for your configuration — industry class rules above are references, not the commitment.
Sample & supply
Standard casters 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 geometry or finishes. The usual validation: roll a sample cart through the actual route — aisles, ramps, the worst floor — and watch for flutter and steering effort before the batch order.
Storage & shipping
Swivel casters ship with raceways greased and swivel action free; store flat in dry cartons. Before installation, rotate each top plate by hand through a full turn — it should sweep smoothly without notching — and check wheel spin. A notched raceway or dragging wheel is flagged and replaced before it is bolted under a cart that needs to steer.