OEM 1272304076 Synchronizer Ring for ZF Gearbox-PairGears
- Model
- PGZF546
Item specifics
- OEM No.
- 56237, AST56237, 78014, 2479237, 609911
- Teeth
- Z=30/51
- Size
- OD:157 mm H:17.2 mm
- Weight(Kg)
- 0.352
- Process
- Shaving Teeth
- Material
- 20CrMnTi
- Heat Treatment
- Carburizing
- Hardness
- 58-63HRC
- Surface Treatment
- Shot Peening
Review
Description
PRODUCT DESCRIPTION
ZF Gearbox Synchronizer Ring 1272304076
The synchronizer cone OEM No 1272304076 is fit for ZF, Astra, Am, T.A.M., DAF, Volvo, Iveco, Eurotec, Pegaso, Leyland, Sisu, FAP/Famos, Steyer, Mercedes-Benz, Ikarus, S.n.v.i-Algeria, Renault Trucks, MAN:
Transmission Versions：
1246 S6-65 , 1250 S6-80 , 1268 S6-90 , 1269 5S-110 , 1272 5S-90 , 1281 S4-90 , 1285 4S-120 ,1286 4S-150 , 1292 5S-111 , VARIOUS DETAILS-GEARBOX E100
This component is vital to keeping trucks in reliable working order and ensuring smooth, stable transmission performance.
PairGears delivers precision gear solutions engineered for efficient power transfer, long-lasting durability, low noise, and dependable safety.For quotation or other information, please contact us and we will be happy to help you.
PRODUCT SPECIFICATION
Part Name | Synchronizer Ring | ||
OEM No | 1272304076 | ||
Teeth | Z=30/51 | ||
Size | OD: 157 mm
H: 17.2 mm | ||
Weight (Kg） | 0.352 | ||
Application | ZF, Astra, Am, T.A.M., DAF, Volvo, Iveco, Eurotec, Pegaso, Leyland, Sisu, FAP/Famos, Steyer, Mercedes-Benz, Ikarus, S.n.v.i-Algeria, Renault Trucks, MAN | ||
COMPANY DETAILS
Focus on Precision Gears for 20+ Years
PairGears is a technology-driven precision gear manufacturer focused on the R&D, manufacturing, and sales of transmission gears and shafts for trucks, passenger vehicles, agricultural machinery and construction equipment. We pair application engineering with robust production to deliver reliable gearbox components built for high torque, long duty cycles, and demanding field conditions.
Over the years, we have built a vertically integrated operation with 300+ sets of equipment, including CNC lathes, gear hobbing and shaving machines, gear grinders, and in-house heat-treatment lines. Our production and metrology systems—sourced from Germany, the United States, and Japan—underpin consistent quality and strong development capability in gear design, process optimization, and measurement.
Gear Machining Service
BROACHING
High-throughput broaching of internal/external splines and keyways; consistent profiles for precise shaft–hub fits.
GRINDING
Finish grinding to ISO Grade 4–6; improves finish, cuts noise, boosts load/contact uniformity—ideal for high-speed, high-load.
HOBBING
Flexible hobbing for spur/helical gears; stable indexing with consistent pitch and tooth form for volume runs.
HEAT TREATMENT
Carburizing, induction hardening, and nitriding with controlled case depth for hardness and core toughness.
LASER CUTTING
Rapid laser blanking and feature cutting; clean edges, minimal HAZ—ideal for prototypes and small batches.
SHAPING
Shaping for internal teeth, splines, blind hubs; keeps form/concentricity under constraints—for small batches, complex parts.
SHAVING
Pre-finish shaving refines flank topology, lowering noise and improving accuracy before heat-treat/grinding.
MILLING
CNC milling of blanks and datum faces; precise allowance and concentricity for downstream gear machining.
Precision Gear Customization Process
Step 1 — Requirement Collection
Customers share design requirements for custom precision gears and shafts—drawings, specs, load cases, or samples.
Step 2 — Drawing Design
PairGears runs DFM, optimizes geometry from 2D/3D or samples, then sends transmission gear drawings for confirmation.
Step 3 — Product Quotation
After drawings are confirmed, we provide an accurate quote covering material, heat treatment, tolerances, and delivery for precision gears.
Step 4 — Tooling & Mold Making
Upon price confirmation, we produce tooling/fixtures/molds. Tooling costs are paid upfront and refunded after bulk orders.
Step 5 — First Sample Approval
First-article sample in ~30 days for inspection and functional tests; customer checks fitment and gives feedback until approval.
Step 6 — Mass Production
With the approved sample, PairGears schedules batch manufacturing of precision gears and shafts to meet your demand plan.
Step 7 — Finished-Product Inspection
Inspect hardness, key dimensions, runout, tooth profile/lead, surface roughness to ensure 100% compliance; full reports provided.
Step 8 — Shipping Arrangement
After QC pass and customer confirmation, we book and ship globally for ag machinery, truck, and construction gearbox parts.
COOPERATIVE BRAND
John Deere
Case IH
Valtra
Massey Ferguson
Caterpillar
Eaton
ZF
BYD
EXHIBITION
PairGears At The Exhibition
PairGears is a technology-driven precision gear supplier. At shows in the Americas, Europe, and Asia, we meet OEMs and distributors, listen to needs, and introduce our custom gears and shafts for agriculture, trucks, construction equipment, and EVs.
What You’ll See At Our Booth
Real parts you can hold and compare—spur/helical gears, bevel sets, planetary parts, and gearbox shafts. Our team will provide a detailed introduction to the processing methods, commonly used materials and approximate delivery dates, and will also answer any questions you have.
How We Help On Site
Bring a drawing, gear photo, or rough specs. We’ll discuss feasibility, suggest practical options, and outline next steps for quotation or sampling.
Stay Updated
FAQ
Q: Which truck platforms are supported?
A : We cover ZF, Eaton/Fuller, Mercedes-Benz, Volvo, Scania, IVECO, DAF, Volkswagen, Sinotruk, MAN manual/AMT platforms. Fitment by OEM part number and gearbox model.
Q: What gear/shaft types do you supply for heavy-duty trucks?
A : We supply spur/helical/bevel/worm gears, synchronizers, input/intermediate/output shafts, crown wheel & pinion sets, PTO gears, planetary gear sets, differential gears.
Q: What materials and heat treatments are used for Truck gears?
A : Materials include 20MnCr5, 20CrMnTi, 18CrNiMo7-6, 42CrMo; heat treatments carburizing, induction hardening, nitriding, followed by tempering and grinding/superfinishing for load and wear resistance.
Q: How do you ensure accuracy grades and inspection?
A : We meet ISO 1328 targets: typically Grade 6–8 for shaved gears and Grade 4–6 for ground gears. Reports include profile/lead, runout, over-pins/balls span, spline gauges, with full records.
Q: What are the MOQ and lead times?
A : We support MOQ = 1 pc for prototypes and spares. Typical timing: samples 2–3 weeks, production 3–6 weeks depending on drawings, materials and heat treatment; capacity can be reserved in peak seasons.
Q: How to confirm fitment with our truck/gearbox?
A : Three ways:
(1) search by OEM P/N;
(2) verify by machine/gearbox model + position;
(3) send a sample or drawing (module, teeth, pressure angle, helix, face width, hardness, profile shift, etc.) for reverse-measurement and validation.
Q: Do you cover both early and current production classic models?
A : Yes. We have long provided compatible replacement gears for both early and currently manufactured models, and we continuously update our database.
Q: What Accompanying Quality Inspection/Technical Documents Can You Provide?
A : We can provide documents such as hardness test records, critical dimension inspection reports, material and heat treatment certificates, etc., according to the project, to meet the compliance requirements of truck spare parts channels and OEMs/Tier 1 suppliers.
AFTER-SALES SUPPORT
Scope
Covers typical issues with installation, fitment, noise, and wear for precision gears, agricultural gears, and transmission shafts.
How To Reach Us
Contact our team via form / email / phone. We respond promptly on business days with practical next steps.
What To Include
PO/Part No. (or OEM No.), machine/gearbox model, issue description (when/conditions), and photos or a short video.
Response & Resolution
Initial assessment → actionable advice (install checks, lubrication, replacement options) → if needed, re-inspection or remake/replacement.
Warranty Summary
Follows your contract/PI. Manufacturing-related defects are handled by repair or replacement as agreed. Overload, poor lubrication, or mis-installation are excluded.
On Receipt & Shipping
Please inspect on arrival. For shipping damage or discrepancies, contact support immediately for assistance.
Our Promise
Clear, plain-language guidance and realistic, workable timelines to reduce downtime and communication costs.
PACKAGING
