50mm Round Self-Inking Stamp
The 50mm round self-inking stamp (R-50) — the largest standard round model in our R-Series, built for large logos and bold branding impressions. Factory direct OEM supply.
Quick Facts
The 50mm round self-inking stamp (R-50) is the largest standard round model in the Hongli R-Series, built for large logos, bold branding impressions and designs with the most text. It supports OEM logo plates, custom housing colors, private label packaging and a replaceable ink pad.
Who Should Choose a 50mm Round Self-Inking Stamp?
The 50mm round self-inking stamp is the right choice for buyers who need the largest round impression in the R-Series: big logos, bold brand marks and designs that combine a detailed graphic with several lines of text.
Distributors often stock the R-50 alongside the 40mm and 45mm models so their customers can cover everything from compact office stamps to maximum-size round branding stamps with one mechanism and one ink pad system.
Product Overview
The 50mm round self-inking stamp (R-50) is the largest standard round model in our R-Series. The 50mm impression area is built for large logos, generous multi-line layouts and bold branding marks on documents, cartons and packaging.
Wholesale buyers typically position the R-50 at the top of a round stamp range: it covers the jobs that smaller sizes cannot handle, from detailed corporate seals to large branding stamps. Hongli produces the R-50 in-house with full OEM support — custom logo plates, housing colors and private label packaging.
Technical Specifications
Technical Specifications — 50mm Round Self-Inking Stamp
| Product Name | 50mm Round Self-Inking Stamp (R-50) |
|---|---|
| Shape | Round |
| Impression Size | Round, Ø50 mm imprint |
| Plate / Die | Round 50mm die, engraved from your artwork (largest standard round model in the R-Series) |
| Body Material | Durable ABS plastic case (multiple colors available) |
| Ink Pad | Replaceable, water-based quick-dry ink |
| Ink Colors | Black, Blue, Red, Green, Violet |
| Impression Life | Up to 5,000+ clear impressions before re-inking |
| Logo | Custom logo available |
| Shell Color | Custom color available for bulk orders |
| MOQ | 100 pcs with your custom logo / plate text |
| Sample | Logo proof in 3 days after artwork confirmation; physical sample in 3 days |
| Bulk Lead Time | 15–25 days depending on quantity |
| Packaging | Individual box + export carton; OEM / private label packaging available |
Key Features
Large Impression Area
The 50mm die gives maximum space for large logos, detailed artwork and multi-line circular text.
Bold, Readable Impressions
A rigid housing and even pressure distribution keep the large impression sharp from edge to edge.
Smooth Self-Inking Mechanism
The R-Series mechanism re-inks the die automatically after every press, ready for high-volume stamping.
Replaceable Ink Pad
Slide-out pads in five colors make the units easy to service and resell with spare pads.
Custom Logo Plate
Your artwork is engraved to order, with a free digital proof before production.
Bulk Order Ready
Stable repeat quality for large quantity orders, with mixed ink colors available.
Common Applications
Large Logo Branding
Round brand stamps for shipping cartons, paper bags, boxes and promotional packaging.
Business & Corporate Use
Company seals that carry logo, full company name and additional text rings in one impression.
Detailed Round Designs
Artwork with fine elements or bilingual text that needs the largest standard round format.
Custom Logo and Shell Colors
The R-50 die is engraved from your vector artwork. Our design team adapts the layout to the 50mm round format — logo size, text rings and spacing — and sends a proof within 3 days for approval.
Standard housing colors ship from stock, and custom shell colors can be matched for bulk orders. See custom stamp colors for the full option list.
Replaceable Ink Pad
The R-50 uses a slide-in replaceable pad, supplied in black, blue, red, green, violet. Distributors usually order a share of spare pads together with the stamps. Details are on the replacement ink pads page.
OEM Packaging and Private Label
For brand owners we supply the R-50 with custom packaging — printed color boxes, header cards, inserts and barcode labels — or as part of a complete private label stamp program.
MOQ & Samples
Samples are produced from your approved artwork so the large impression can be checked for even inking before mass production. The R-50 can be mixed with other R-Series sizes in one order.
Manufacturing & Quality Control
Large-format dies are impression-tested across the full 50mm surface on every batch, alongside mechanism and housing checks. More about our production steps is on the self-inking stamp manufacturer page.
Learn more about our production on the Self-Inking Stamp Manufacturer page, or contact our team for factory details.
Compare Other Round Stamp Sizes
All four round sizes share the same self-inking mechanism, ABS housing and OEM options. Use the table below to compare and switch between models.
| Imprint Size | Product Page | Recommended Use |
|---|---|---|
| 40mm | View 40mm | General office and standard company stamps |
| 42mm | View 42mm | Company and business stamps with longer names |
| 45mm | View 45mm | Larger logos and official-style stamps |
| 50mm | 50mm — Current Model | Large logos and maximum round impressions |
For a full selection walkthrough, read the 40mm vs 42mm vs 45mm vs 50mm Round Self-Inking Stamp Size Guide.
Related Products
R-40 · 40mm
Best seller for company logos with circular text.
R-42 · 42mm
Extra room for longer company names and detailed logos.
R-45 · 45mm
Larger imprint for complex logos and more text.
Replacement Ink Pads
Replaceable ink pads for all R-Series round self-inking stamps.
Need Your Own Brand?
We support custom logo plates, custom housing colors, private label packaging and bulk repeat production for importers, wholesalers and office supply brands.
Quick Factory Quote
Send model, size, quantity, logo requirement and destination country. We will reply within 8 hours.
50mm Round Self-Inking Stamp FAQ
Common questions about the 50mm round self-inking stamp, large logos, bulk orders and samples.
1. Is 50mm the largest round stamp available?
The R-50 is the largest standard round model in our R-Series lineup, which covers the most requested sizes from 25mm to 50mm. If your project needs a special format, contact us with your artwork and we will confirm the options.
2. What type of designs fit a 50mm impression?
Large logos, detailed artwork, multi-line circular text and bilingual layouts all fit comfortably at 50mm. It is the right choice when smaller round sizes would force you to shrink or simplify the design.
3. Can I customize the logo?
Yes. The die is engraved from your artwork. Send a vector file and we will prepare a digital proof within 3 days, including layout adjustment for the round format.
4. Can I customize the packaging?
Yes. We offer printed color boxes, header cards, inserts and barcode labels under your brand, plus full private label programs for the stamp and the box.
5. Can I order bulk quantities?
Yes. The standard MOQ is 100 pcs per design, and bulk production takes 15–25 days depending on quantity. Mixed sizes and ink colors can be combined in one order.
6. Can I request a sample before ordering?
Yes. After artwork confirmation the logo proof is ready in 3 days and a physical sample takes 3 days, so you can approve the impression before mass production.