Custom & Standard Sprockets – Engineered for Long Service Life

Raydafon sprockets are manufactured from case-hardened alloy steel, stainless steel or cast iron. We offer ANSI/ISO standard and custom tooth profiles, bores, and hub styles. ✅ Request a quote with your drawing – we reply within 24h.

Frequently Asked Questions

• How to select the correct sprocket for my chain? – Match the pitch, number of teeth, and bore size. Use our selection table below or contact our engineers.
• When should I replace a sprocket? – Replace when tooth tips become hooked, worn thin, or chain jumps. Running a worn sprocket will destroy a new chain quickly.
• Do you offer QD or taper bushing sprockets? – Yes, all our sprockets can be supplied with QD or taper lock bushings for easy installation.
• What is your MOQ for custom sprockets? – MOQ as low as 10 pcs for custom designs. No MOQ for standard sizes.

Specification Table

👉 Need a custom sprocket? Send your drawing for a fast quote

Precision Roller Chains – High Fatigue Strength & Wear Resistance

ISO/ANSI standard roller chains, conveyor chains, and stainless steel chains. All chains are pre-stressed and shot-peened for extended life. ✅ Download our chain catalog or request a sample.

Common Questions

• What lubrication is best for roller chains? – Use ISO VG 150–220 oil for general applications. Grease is not recommended for high-speed drives.
• How to measure chain wear? – Measure elongation over 10 links. Replace when elongation exceeds 2%.
• Can I use Raydafon chain with other brand sprockets? – For best results, we recommend matching chain and sprocket from same manufacturer to avoid pitch mismatch.
• Lead time for bulk orders? – 20-30 days for standard chains; 35-45 days for special attachments.

🔗 Need a custom attachment chain? Tell us your application

High-Efficiency V-Belt Pulleys & Sheaves – Up to 98% Power Transmission

Cast iron or steel sheaves for classical A/B, narrow wedge SPB/SPC, and 3V/5V belts. Dynamically balanced to G6.3. ✅ Get a quote for a complete drive set (pulley + belt + bushing).

FAQ

• How to choose between classical and narrow wedge? – Narrow wedge (SPB/SPC) transmits 1.5-3x more power in same space, ideal for compact drives.
• What causes belt squeal? – Usually misalignment, insufficient tension, or worn grooves. Check with a straightedge.
• Do you supply taper lock sheaves? – Yes, all sizes available with taper bushings for easy mounting.
• Maximum speed rating? – Up to 10,000 RPM for small pulleys. Consult our engineering data.

⚙️ Send your motor power & speed for a free drive calculation

High-Precision Gears & Racks – DPG 5 to 7, Straight or Helical

Spur gears, helical gears, racks, bevel gears. Material: 20CrMnTi case-hardened, C45, or stainless steel. ✅ Request a no-cost design review for your linear motion system.

Q&A

• How to calculate linear travel per gear revolution? – Travel = π × Module × Teeth. Example: M2 with 20 teeth moves 125.66 mm per rev.
• What is backlash and how to minimize it? – Backlash is free movement between teeth. Use twin pinion preload or specify precision ground gears (DIN 5).
• Can you join rack sections for long travel? – Yes, we supply matched ends for smooth joining.
• Do you offer custom module gears? – Yes, non-standard modules and tooth modifications available.

📐 Send your gear drawing – we produce 1:1 replacement

Heavy-Duty Axles for Truck, Trailer & Off-Highway Equipment

Full-floating and semi-floating axles, GAWR up to 40,000 lbs. Forged alloy steel housing, induction-hardened shafts. ✅ Get a quote with your axle ratio and load requirements.

FAQ

• What axle ratio do I need for towing? – Higher ratio (e.g., 4.10:1) gives better torque for towing; lower ratio (3.31:1) saves fuel for highway.
• How often to change axle oil? – Every 250,000-500,000 miles or annually for severe duty. Use API GL-5 80W-90.
• Can you make custom axle lengths? – Yes, custom lengths, bolt patterns, and brake brackets available.

🚛 Need a replacement axle? Tell us your OEM part number

Agricultural & Industrial PTO Shafts – ASAE Standard, 540/1000 RPM

Series 6, 10, 15, 20, 30, 45. Forged yokes, plastic or steel guards, shear bolt or friction clutch protection. ✅ Request a PTO shaft length calculation form.

FAQ

• How to measure correct PTO shaft length? – Measure from tractor PTO stub to implement input with both hitched and implement on ground; add 2-3 inches for clearance.
• What causes a PTO shaft to separate? – Over-extension due to wrong length or hitch geometry. Always check extended length.
• Do you offer CV (constant velocity) PTO shafts? – Yes, for tight turning applications.

🌾 Send your tractor model + implement for a ready-to-ship PTO shaft recommendation

Quick-Change Bushing Systems – Taper Lock, QD, Split Taper

We supply bushings and hubs for sprockets, pulleys, and couplings. Finished bores, keyways, and set screws. ✅ Request a bushing size chart.

FAQ

• What is the difference between QD and taper lock? – QD uses a split flange and bolts; taper lock uses a single clamping bolt. Both are interchangeable for most sizes.
• How to remove a stuck bushing? – Use the removal holes with bolts to break the taper fit. Never hammer.

🔧 Need a matching set (bushing + sprocket)? Ask for bundle price

Flexible & Rigid Couplings – Jaw, Gear, Disc, Grid

Max torque up to 500,000 Nm. Zero backlash or elastomeric damping. For pumps, compressors, conveyors. ✅ Get a coupling selection guide.

FAQ

• How to select the right coupling type? – For high misalignment use jaw or gear coupling. For high precision use disc coupling. For shock absorption use grid coupling.
• When to replace elastomer spider? – If cracked, hardened, or missing pieces. Replace immediately.
• Can you supply spacer couplings for pump maintenance? – Yes, standard spacer designs available.

⚙️ Tell us your shaft sizes & misalignment – we'll recommend the best model

Agricultural PTO Gearboxes – Up to 180 HP, 1:1 to 6:1 Ratios

Spiral bevel or helical gearboxes for rotary tillers, mowers, balers, spreaders. Cast iron housing, double lip seals. ✅ Request a gearbox for your implement type.

FAQ

• What oil to use for gearbox? – EP 80W-90 or 85W-140 gear oil. Change every 500-1000 hours.
• Can I run a 540 RPM gearbox at 1000 RPM? – No, it will overheat and fail. Use correct speed rating.
• Do you make custom ratios? – Yes, we can engineer any ratio from 0.5:1 to 10:1.

🚜 Send your implement model – we will confirm direct fit

Custom Hydraulic Cylinders – Bore up to 20", Stroke up to 200"

Tie-rod, welded, mill-type cylinders. Max pressure up to 6,500 psi. Chrome-plated piston rod, polyurethane seals. ✅ Request a cylinder drawing review.

FAQ

• How to calculate cylinder force? – Force = Pressure × Piston area. Example: 4" bore at 2500 psi = 31,400 lbs.
• What are signs of seal failure? – External oil leakage, cylinder drift, sluggish movement.
• Can you make double-acting cylinders with cushioning? – Yes, standard option.

💧 Send your bore, stroke, and mounting style – we quote within 24h

Industrial Air Compressors – Reciprocating & Rotary Screw, 2–75 HP

Raydafon air compressors provide reliable compressed air for workshops, manufacturing lines, and continuous operation. Oil-lubricated and oil-free options. ✅ Request a compressor sizing calculation (CFM, PSI, tank size).

Frequently Asked Questions

• How do I choose the right compressor size? – List all air tools and their CFM consumption at 90 PSI. Add 20% margin. Our engineers can calculate for free.
• What is the difference between single-stage and two-stage? – Single-stage for <150 PSI, two-stage for higher pressure and continuous duty. Two-stage lasts longer.
• Do you offer oil-free compressors? – Yes, for food, pharmaceutical, and painting applications. Standard models available.
• What is your warranty? – 12 months on all parts, 24 months on screw air ends.

Quick Specification Table

🔧 Need a compressor for your specific tools? Tell us your CFM requirement →

Rotary Vane & Dry Scroll Vacuum Pumps – Ultimate Vacuum down to 1×10⁻³ mbar

Oil-sealed, dry scroll, and Roots booster pumps for industrial vacuum systems, laboratories, and packaging. CE certified. ✅ Request a pump-down time calculation.

Common Questions

• Oil-sealed vs dry pump – which one for my process? – Oil-sealed gives deeper vacuum (10⁻³ mbar) but needs oil changes. Dry scroll is clean, maintenance-free, good to 10⁻² mbar.
• How often to change oil in rotary vane pump? – Every 2000-3000 hours in clean applications; more frequent in dirty or humid environments.
• Do you supply Roots booster + backing pump combos? – Yes, we provide complete pumping systems for high-speed evacuation.
• Can you handle corrosive gases? – Yes, we offer chemical-resistant versions (PTFE coatings, special seals).

Specification Reference

⚙️ Tell us your chamber volume and desired vacuum level – we'll recommend the right pump.

Central Impression (CI) Flexo Press – Up to 10 Colors, 550 m/min

High-speed printing on flexible films, paper, and laminates. Servo-driven register control, chambered doctor blade, and energy-saving drying. ✅ Request a print sample or a machine ROI analysis.

Printer's Questions

• What substrates can you print on? – PE, PP, BOPP, PET, paper, and aluminum foil. Thickness 12–250 microns.
• What is the typical registration accuracy? – ±0.1 mm at full speed, thanks to CCD camera closed-loop control.
• How long does job changeover take? – 30–45 minutes including sleeve change, ink wash-up, and registration.
• Do you offer UV flexo and lamination inline? – Yes, UV curing stations and inline laminator are optional.

Standard Configurations

🖨️ Send your film type, print width, and daily output – we will configure a press for you.

RTO for VOC Destruction – Up to 99.5% DRE, 95% Thermal Efficiency

Regenerative thermal oxidizers for chemical, printing, coating, and pharmaceutical exhaust. 2-chamber or 3-chamber designs. ✅ Get a free emissions compliance assessment.

Environmental Engineer's FAQ

• What is the minimum VOC concentration for self-sustaining operation? – Above 3% LEL, the RTO can run with zero auxiliary fuel.
• How much pressure drop should I expect? – 12–24 in. w.g. depending on ceramic media type and inlet loading.
• What is the typical ceramic media replacement interval? – 5–8 years under normal conditions; longer with pre-filtration.
• Can you handle chlorinated VOCs? – Yes, with upgraded stainless steel lining and downstream acid scrubber (optional).

Standard Models

🌿 Send your exhaust flow rate, VOC species, and concentration for a customized RTO solution.