Frequently asked questions

Any business or individual in North America can order online at maedlernorthamerica.com: engineers, machine builders, maintenance teams, distributors, schools and hobbyists. We also ship to the other countries listed at checkout. Not sure whether we deliver to you? Send us a request with your address. Prices are shown on every product page. A free customer account saves your addresses and order history so you can reorder faster.

Yes. All prices are in U.S. dollars, and most product pages show quantity prices that drop as you order more, for example from 1–4 pieces up to 500 pieces and more. For larger quantities, or a project with many different parts, request a quote and we will price the whole list.

Email your part numbers and quantities to sales@maedlernorthamerica.com, call 941.803.0160, or use the contact form at the bottom of every page on our website. For custom parts, attach a drawing or describe the part and the quantity. We usually reply within one business day.

Tip: add the parts to your cart and click Share cart to receive the cart as a PDF. Many purchasing departments accept it for internal approval.

Type the 8-digit MÄDLER product number (for example 22372000) into the search box at the top of this site. MÄDLER uses the same number in its printed catalogue, on maedler.de and on our product pages, so a number from a drawing, an old invoice or a machine parts list leads straight to the part. If the part is not in our online shop, email the number to sales@maedlernorthamerica.com. We can supply the full MÄDLER product range, as well as other items we can source for you.

Often, yes. Send us the other manufacturer's part number, a drawing, a photo with measurements, or the key data (bore, number of teeth, module or pitch, width, material). We will suggest the closest MÄDLER standard part, or quote a custom part if no standard part fits.

We accept all major credit cards. Business customers with an order history and continuing orders can apply for Net 30 terms; email sales@maedlernorthamerica.com to apply. Wire transfer and ACH are also available.

Create a free account on our website and send your resale or sales-tax exemption certificate to sales@maedlernorthamerica.com. We will then approve your account for tax-exempt ordering.

No, there is no minimum order. You can order a single standard part online. For custom-made and reworked parts, the price per piece drops as the quantity goes up, so ask for a quote with a few quantity levels if you are not sure how many you need.

Every product page shows the part's stock status. Parts shown as in stock ship from our warehouse in Bradenton, Florida, the same business day for orders placed before 2:00 p.m. Eastern. Parts shown as backorder get transferred to our warehouse and usually ship within 1–2 weeks. Custom and reworked parts get their own lead time on the quote.

The part is not on our shelf in Florida right now, but you can still order it at the listed price. We transfer the part to our warehouse and ship it to you, usually within 1–2 weeks.

We normally ship your order complete, so everything arrives in one delivery. If you need the in-stock items sooner, add a note at checkout or call us and we can split the shipment. Extra charges for a separate shipment apply.

Shipping is calculated at checkout based on weight and destination. We ship with UPS and FedEx, and heavy orders ship by LTL freight. You can also ship on your own UPS or FedEx account for a $10 handling fee.

Yes. We ship to customers across North America, including Canada and Mexico. Duties, import taxes and brokerage fees are paid by the customer.

Yes, unused standard parts in new condition can be returned within 30 days of purchase. Email returns@maedlernorthamerica.com for a Return Merchandise Authorization (RMA) number before you send the part. A 15% restocking fee applies, and the buyer pays return shipping. Custom-made parts and belts or chains that were cut to size cannot be returned. If a part arrives damaged or defective, contact us and we will arrange a replacement or refund. Full details are in our Return Policy.

Yes. Most MÄDLER gears, sprockets, timing belt pulleys and couplings are stocked with a small pilot bore so they can be machined to fit your shaft. We can bore to your size and tolerance, cut a keyway to DIN 6885, and add threaded holes for set screws. We also offer expedited rework services for many parts.

Yes. For common shaft diameters, many sprockets, V-belt pulleys, spur gears and worm gear sets are stocked ready to install: with a finished bore and keyway, or prepared for a Taper bush. Use the Bore filter on the product category pages to find them.

Yes. MÄDLER makes custom parts in its own factories: spur gears, gear racks, bevel gears, worm gears and worms, trapezoidal lead screws and nuts, splined shafts and hubs, and clamp collars. Production runs from a single piece to large series, as well as ready-to-install assemblies. Send a drawing (PDF, STEP or DXF), a sample, or a description with the quantity to sales@maedlernorthamerica.com, and we will quote price and lead time.

MÄDLER's own production includes:

• CNC and conventional turning and milling, machining centers and CNC drilling
• Gear milling, bevel gear milling, gear rack milling and gear shaping
• Gear grinding up to quality 6, plus cylindrical and surface grinding
• Thread whirling, and rolling of trapezoidal threads up to 70 t pressure
• Broaching of keyways and spline profiles
• Straightening of long parts, sandblasting, surface treatment and assembly
• Measuring and testing for quality control

Yes. Roller chains can be cut to any length, riveted into endless chains, or fitted with attachments at the spacing you need, from a single chain to large series. You can design an attachment chain and see its price with the chain configurator on our MÄDLER tools page.

Yes. For parts you buy regularly, we can set up a blanket order and keep your parts ready for scheduled releases, so each release ships quickly. Contact sales to set this up.

Module (m) is the metric measure of gear tooth size. It equals the pitch diameter in millimeters divided by the number of teeth: a module 1 gear with 20 teeth has a 20 mm pitch diameter. A larger module means larger, stronger teeth. Two gears mesh only if they have the same module and the same pressure angle. MÄDLER spur gears are involute gears with a 20° pressure angle.

Diametral pitch (DP) = 25.4 ÷ module, and module = 25.4 ÷ DP.

The results are not whole numbers, so a metric gear does not match a standard inch gear exactly.

No, not reliably. Even the closest pairs, such as module 1 (25.4 DP) and 24 DP, have different tooth spacing, so the gears wear fast and run noisily. Older U.S. gears may also have a 14.5° pressure angle instead of 20°. Replace both gears of a pair with the same system.

H7 is an ISO tolerance for holes: the bore is never smaller than its nominal size and only slightly larger. For example, a 10 mm H7 bore measures between 10.000 and 10.015 mm (0.3937–0.3943 in). On a shaft with h6 tolerance it gives a close sliding fit; on a k6 shaft, a light press (transition) fit. Die-cast plastic sprockets are usually made to H8, a slightly wider tolerance.

No. MÄDLER parts use metric keys to DIN 6885, for example a 5 × 5 mm key for shafts over 12 mm up to 17 mm. U.S. inch keys follow ANSI B17.1 and have different widths, so a metric key will not fit an inch keyway properly. If your shaft is in inches, send us a request: whether we can cut an inch keyway depends on the part.

These grades are close, not identical. For critical applications, check the material data on the product page or ask us.

Plastic gears (POM, polyacetal) run quietly, need no lubrication and suit light loads, such as office equipment and small automation. Brass and stainless steel resist corrosion. Steel gears carry the highest loads, and hardened, ground gears give the most precision and wear resistance. The catalogue tables list the permissible torque of each gear, calculated to DIN 3990.

A pin through hub and shaft suits low torque. A feather key (DIN 6885) suits medium torque and is the most common connection. Locking assemblies, clamping bushes and shrink disks clamp a plain shaft with no keyway and carry high torque. Taper bushes fit quickly, come in many bore sizes and carry fairly high torque. MÄDLER stocks sprockets, pulleys and couplings in Taper versions.

T (T2.5, T5, T10, T20) is the classic metric trapezoidal tooth. AT (AT3, AT5, AT10, AT20) has stronger teeth for more power and less backlash, a good choice for linear positioning. HTD (3M, 5M, 8M, 14M) has rounded teeth for high torque. MXL, XL, L and H are the inch profiles found on many U.S. machines. Belt and pulleys must always have the same profile. Our timing belt calculator helps you size the drive.

Both are covered by ISO 606. European B-series chain (for example 08B-1, 1/2 in pitch) was formerly DIN 8187; American A-series or ANSI chain (for example ANSI 40, also 1/2 in pitch) was formerly DIN 8188. Roller diameter, inner width and plate sizes differ, so chains and sprockets from the two series should not be mixed. MÄDLER supplies both, including ANSI 25 to 80 sprockets and standard, self-lubricating and stainless ANSI chains. Availability depends on size and version, so send us a request with the chain or sprocket you need.

Most of the MÄDLER range is metric, but it also includes ANSI roller chains and sprockets and inch timing belts and pulleys (MXL, XL, L and H). For a metric part on an inch shaft, boring and keying the hub to your inch size depends on the part. Send us a request with your shaft size and we will find the right solution.

More than 50,000 power-transmission and machine components are in our online shop. The range includes spur, bevel and worm gears; gear racks; sprockets and roller chains; timing belts and pulleys; V-belts; couplings and universal joints; locking assemblies; bearings and bushes; lead screws and ball screws; linear guides and Accuride® telescopic slides; castors and wheels; fastening elements; handles and operating parts; gearboxes and geared motors; pneumatic elements; and adhesives and lubricants.

Yes. Most product pages link to free 2D and 3D CAD models in common formats such as STEP, plus the matching catalogue page as a PDF. More files are under Downloads.

Our CAD file downloads run through partcommunity.com. Once you create a free account, you can download the CAD files in all common file formats.

Yes. Request a free printed catalogue on our Catalog request page, or download the PDF under Downloads.

Yes. MÄDLER has been certified to DIN EN ISO 9001 since 1995. Certifications and operating instructions are under Downloads. Certificates of conformance and material certificates are available on request for an extra charge.

Yes. Many products are available in stainless steel, including roller chains and sprockets, gears and gear racks, locking assemblies, bearings, castors, telescopic slides and fastening elements. For food processing there are bearings and worm gearboxes filled with NSF H1 food-grade lubricant, self-lubricating chains with NSF H1 lubricant, and NSF-registered greases and sprays. The product page states the registration for each part.

If you require a part made from stainless steel that we only carry in other materials, just send us a custom request with the quantity required.

Yes. Our MÄDLER tools page has a timing belt calculator and a chain configurator. Each product page also lists dimensions, material, permissible torque where relevant, and quantity prices.

Maedler North America is the U.S. branch of MÄDLER GmbH of Stuttgart, Germany, a manufacturer and supplier of power-transmission components founded in 1882. Maedler North America was founded in 2020. From Bradenton, Florida, it serves customers across North America with U.S. dollar pricing, online ordering and personal support.

MÄDLER makes its own parts in factories in Stuttgart and Hamburg, Germany, and other factories around the globe, all under an ISO 9001 quality management system. About 6,000 catalogue parts come from MÄDLER's own production. Quality is checked before the parts leave production.

Call 941.803.0160, Monday to Friday, 8 a.m. to 5 p.m. Eastern, email sales@maedlernorthamerica.com, or write to 3135 Lakewood Ranch Blvd #107, Bradenton, FL 34211. Our team helps with part selection, cross-references, quotes and custom work.