Caster MOQ and Carton Volume: An Import Buyer’s RFQ Guide

Key takeaways

• MOQ and lead-time references belong to the individual model and quotation.
• Using the published carton dimensions, 1,000 JQ-183-1 casters require 0.4914 m³ of carton volume; 1,000 JQ-184 casters require 0.307125 m³ before full-carton rounding.
• A lower calculated carton volume is not a freight quote, a container loading plan or proof that the models are interchangeable.

Start with the published model-level references

XIN JIE lists JQ-183-1 as a 50 mm brake caster and JQ-184 as a 38/50 mm brake caster. Both public pages show a 1,000-piece MOQ reference, a 15-day lead-time reference and a carton size of 63 × 30 × 26 cm. The quantity per carton differs: 100 pieces for JQ-183-1 and 160 for JQ-184.

These entries were checked on the public pages on 20 October 2026. Confirm the chosen size, mounting, color and brake configuration before treating the reference as a quotation. JQ-184 lists two size options; the packing plan for the exact ordered option must be confirmed.

Sources: JQ-183-1 product and packing details · JQ-184 product and packing details

Calculate carton volume before comparing logistics

Convert the dimensions to meters: 0.63 × 0.30 × 0.26 = 0.04914 m³ per carton. For a normalized comparison, divide by the published pieces per carton and multiply by 1,000. That gives 0.4914 m³ for JQ-183-1 and 0.307125 m³ for JQ-184.

The second figure is 37.5% lower on this normalized carton-volume measure. It does not mean freight cost is 37.5% lower: chargeable weight, packing changes, pallets, handling, transport mode and the freight quotation can change the bill. The two products also require their own technical approval.

Sources: JQ-183-1 input data · JQ-184 input data

Round to real cartons before issuing the order

A normalized measure is useful for comparison, but dispatch uses a physical packing plan. At 1,000 pieces, JQ-183-1 fills 10 cartons. JQ-184 corresponds to 6.25 cartons mathematically. If the supplier uses the same outer carton for the partial balance, allow 7 cartons and 0.34398 m³; the supplier may instead quote a different partial-carton arrangement.

Another option is 1,120 JQ-184 pieces in 7 full cartons. This adds 120 pieces beyond the 1,000-piece reference, so evaluate cash tied up and actual demand before rounding the order upward. Full cartons are not automatically the best buying decision.

• Ask for net and gross weight per carton and total shipment weight.
• Confirm whether the stated dimensions are the final external carton dimensions.
• Get pallet dimensions, stack height and stackability if pallets are required.
• Have the forwarder quote from the final packing list; do not estimate container capacity from CBM alone.

Separate sample time, approval time and production lead time

The 15-day reference on these two pages should not become a door-to-door promise. Ask the supplier when the production clock starts: deposit, drawing sign-off, color approval, approved sample or another agreed event. Also ask whether the quoted period means calendar days or working days.

Create separate milestones for sample preparation, courier delivery, fit and function approval, production completion, inspection and cargo readiness. For a new color, ask whether an available color card or a physical material sample can be supplied. Approve the actual tread or plastic component when appearance matters.

If a sample fails the agreed test, document the revision and retest before releasing the bulk order. Include the required report and quality checks in the RFQ so test cost and timing can be quoted. Neither a public lead time nor an approved product photo establishes that laboratory testing is included.

Clarify mixed orders and warehouse requirements

The wholesale sourcing page invites buyers to discuss mixed models and packing separation during RFQ. That is a useful starting point, but it does not promise that a 1,000-piece MOQ can be split freely across any number of models, colors or mounting variants. Send a quantity breakdown for each SKU and ask how MOQ applies.

For mixed containers, specify model labels, carton numbering, packing-list format and responsibility for consolidation. Ask whether supplier-side storage, staggered dispatch or an overseas warehouse is available, and obtain location, holding period, fees and stock ownership terms. These arrangements are not established by the public product references.

Your final comparison should use the same specification and commercial basis: approved model, quantity, packing, delivery term, named location and agreed tests. Keep customs, duty and route-specific charges in the forwarder or customs quotation rather than treating the article’s carton arithmetic as a landed-cost calculation.

Sources: XIN JIE wholesale sourcing and mixed-model RFQ guidance

Send a quote request that can be answered in one pass

Attach a short line-item sheet with model, size, mounting, material, brake, color reference, quantity and destination. Include the sample and test requirements, carton labels and any need for mixed loading or staged shipment. Ask the supplier to mark every unconfirmed field.

For these two models, explicitly reconfirm the 1,000-piece reference, the 15-day reference, pieces per carton and the final external carton size for the selected variant. Request a dated quotation and final packing list before booking freight. This keeps an apparently attractive unit price connected to the product and shipment you actually intend to buy.

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