Сипаттама
Single-Strand Type B Hub Sprocket — Direct Shaft Mounting Solution
The Ever-power Type B Steel Stock Sprocket features a hub extending from one side of the tooth plate, designed for straightforward shaft mounting with a standard keyway and setscrew. This configuration is the most popular choice for general industrial drives where the sprocket mounts on a shaft supported by pillow-block or flange bearings. Covering ANSI series No.25 through No.200 with tooth counts from 8T to 112T, the Type B sprocket line delivers dependable performance across thousands of applications worldwide.
Complete Technical Data
| Тізбек нөмірі | Pitch | Roller Dia. | Tooth Width B1 | Hub Dia. Range (Dm) | Overall Width (A) | Bore Range (D1) |
|---|---|---|---|---|---|---|
| 25 | 0.250″ | 0.130″ | 0.110″ | 0.44″–1.38″ | 0.50″–0.75″ | 1/4″–1/2″ |
| 35 | 0.375″ | 0.200″ | 0.168″ | 0.75″–2.25″ | 0.75″–1.00″ | 3/8″–3/4″ |
| 40 | 0.500″ | 0.312″ | 0.284″ | 1.00″–3.00″ | 0.75″–1.50″ | 1/2″–1″ |
| 50 | 0.625″ | 0.400″ | 0.343″ | 1.25″–3.75″ | 1.00″–1.75″ | 1/2″–1-1/4″ |
| 60 | 0.750″ | 0.469″ | 0.493″ | 1.50″–4.50″ | 1.25″–2.25″ | 5/8″–1-1/2″ |
| 80 | 1.000″ | 0.625″ | 0.575″ | 2.00″–6.25″ | 1.50″–3.50″ | 3/4″–2″ |
| 100 | 1.250″ | 0.750″ | 0.713″ | 2.50″–7.00″ | 2.00″–4.50″ | 1″–2-3/16″ |
Product Advantages
🛠 One-Side Hub for Easy Mounting
The integral hub provides a stable platform for keyway and setscrew attachment, eliminating the need for separate adapters and reducing installation time by up to 40% compared to Type A weld-on setups.
🛡 Induction-Hardened Teeth
Sprockets with 25 teeth or fewer feature teeth hardened to HRC 50–60 through high-frequency induction, dramatically extending tooth life in abrasive or shock-loaded environments.
📈 Optimised Weight Distribution
The asymmetric hub design centres the chain load closer to the bearing, reducing shaft bending moment and bearing stress — particularly beneficial for overhung drive configurations.
🎯 Stock Bore & Finished Bore Options
Available as stock (pilot) bore for customer machining, or finished bore with keyway and setscrew ready for immediate installation on standard metric or imperial shafts.
Compatibility Reference
Type B sprockets are compatible with all standard ANSI single-strand roller chains of the same series number. The hub bore accommodates standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat.
- Compatible chains: ANSI 25, 35, 40, 41, 50, 60, 80, 100, 120, 140, 160, 200 (single strand)
- Shaft interface: Standard keyway per ANSI B17.1, setscrew (cup-point socket head cap screw)
- Couplings: Direct keyed bore, QD bushing adapter, or taper-lock conversion
How to Choose the Right Type B Sprocket
Step 1 — Identify Your Chain Size
Check the number stamped on your chain side plates (e.g., “60” for 3/4″ pitch). This number directly corresponds to the sprocket series number you need.
Step 2 — Determine Tooth Count
The driver (small) sprocket typically has 17–25 teeth for smooth engagement. The driven (large) sprocket is calculated by multiplying the driver teeth by the desired speed ratio. Avoid fewer than 15 teeth at speeds above 1,000 RPM to minimise chordal action.
Step 3 — Confirm Bore & Hub Clearance
Verify your shaft diameter falls within the bore range listed in our specification table. Check that the hub outer diameter (Dm) clears adjacent structures, and confirm the overall hub width (A) fits within your available axial space.
Material & Process Details
| Мүлік | Техникалық сипаттама |
|---|---|
| Негізгі материал | AISI 1045 Carbon Steel (C: 0.43–0.50%, Mn: 0.60–0.90%) |
| Созылу күші | ≥ 85,000 psi (585 MPa) |
| Tooth Hardening | Индукциялық шыңдалған HRC 50–60 (≤25T) |
| Core Hardness | HRC 20–28 (hub body) |
| Беткі әрлеу | Black oxide (standard); Zinc, Dacromet, Nickel optional |
| Machining Tolerance | Bore: H7 (+0.000/+0.025 mm); Pitch: ANSI B29.1 Grade |
Өнеркәсіптік қолданыстар
Қаптама
Case packers, palletisers, label applicators
Water Treatment
Scraper drives, sludge collectors, aerators
Food Processing
Wash-down conveyors, oven drives, fryers
Automotive
Transfer lines, AGV drives, paint shop conveyors
Verified Customer Feedback
★★★★★ Rio Tinto Iron Ore — Perth, Australia
“Our No.80 Type B sprockets run on ore screening equipment in the Pilbara. Temperatures exceed 45 °C and dust is relentless — these sprockets outlast alternatives by a significant margin. Excellent value for money.”
★★★★★ Nestlé Purina — St. Louis, USA
“Hygiene is critical in pet-food manufacturing. The nickel-plated finish option from Ever-power passed our corrosion tests with flying colours. Chain drives on our packaging lines have been running trouble-free for 14 months.”
★★★★☆ Toyota Motor Manufacturing — Aichi, Japan
“We use No.40 and No.50 Type B sprockets in our welding-line transfer conveyors. Dimensional consistency between batches is excellent, which matters when we change sprockets during planned shutdowns with tight time windows.”
★★★★★ Sappi Paper Mill — Durban, South Africa
“The pulp-and-paper environment is harsh — high humidity, chemical splashes. Ever-power’s zinc-plated Type B sprockets resist corrosion far better than plain steel alternatives. Highly recommended.”
FAQ — Type B Sprocket
Can I use a Type B sprocket as an idler?
Type B can serve as a chain tensioning idler if mounted on a bearing-supported shaft. However, for true backside idler applications (where the smooth back of the chain contacts the sprocket), a dedicated idler sprocket with flanges is recommended.
What is the maximum operating speed?
Maximum RPM depends on the chain pitch and tooth count. As a rule of thumb, smaller-pitch sprockets (No.25–40) can operate safely above 2,000 RPM, while larger pitches (No.100+) should generally stay below 500 RPM. Consult the ANSI horsepower rating tables for precise limits.
How do I order a finished bore Type B sprocket?
Specify the chain number, tooth count, bore diameter (inches or mm), keyway size, and setscrew position. Our team will machine the bore and ship the sprocket ready for installation. Visit our contact page to submit your requirements.
Do you offer stainless steel versions?
Yes. We manufacture Type B sprockets in AISI 304 and 316 stainless steel for food-grade, pharmaceutical, and marine applications. Lead time is typically 20–30 business days.
What lubrication is recommended?
Use ISO VG 100–150 mineral oil or NLGI #2 lithium-complex grease. In food environments, use H1-rated lubricants. Re-lubricate at intervals based on the duty cycle — typically every 500–1,000 operating hours.
Companion Products
🔗 Roller Chains
ANSI standard & heavy series single-strand chains for maximum sprocket life. Shop now
🔨 QD Bushings
Quick-disconnect taper bushings for tool-free sprocket removal during maintenance.
⚙ Pillow-Block Bearings
Self-aligning UCF and UCP series bearings for shaft support.
Installation Steps
- Shaft Inspection: Verify shaft roundness and keyway dimensions. Remove any burrs using a fine file.
- Bore Alignment: Slide the sprocket onto the shaft with the hub facing the bearing support to minimise overhang.
- Кілтті орнату: Insert the key (square or rectangular per shaft size) and push the sprocket to its axial position.
- Setscrew Torque: Tighten the setscrew over the key to recommended torque. Use a second setscrew at 90° for added security on high-vibration drives.
- Sprocket Alignment: Confirm both sprockets are coplanar within 0.5 mm using a straight edge across tooth faces.
Preventive Maintenance Tips
Lubricate the chain every 500 operating hours with recommended oil or grease. Inspect tooth flanks monthly — if the profile develops a hook shape or wear exceeds 0.5 mm, schedule replacement. Always replace the chain and sprocket together for optimal performance; a new chain on worn sprockets (or vice versa) accelerates wear on the new component.
Standards & Quality Assurance
Manufactured to ANSI/ASME B29.1 and ISO 606 standards. Our ISO 9001:2015-certified factory performs 100% dimensional inspection on bores and pitch diameters using calibrated instruments. Material traceability from billet to finished product is maintained for every batch.
About Ever-power Australia Sprocket Co., Ltd.
We specialise in the design, manufacture, and global distribution of power transmission sprockets. With a modern production base spanning 30,000 m², 120+ CNC machines, and a dedicated quality team, we serve OEM customers across 65 countries. Our engineering department offers free sprocket selection support, CAD drawings, and custom prototyping. From single pieces to full container loads, we deliver — on time, every time.
Take the Next Step
Upgrade your drive system with precision-engineered Type B sprockets. Contact us today for pricing, technical data sheets, or to discuss your custom requirements.
