SKF PHP21-8M-20RSB Timing belt pulley (synchronous sprocket)
Pricing
Request a quote
We reply within 24 hours
Product Description
SKF PHP21-8M-20RSB timing belt pulley (synchronous sprocket). Steel or aluminium synchronous drive pulley cut to match a paired timing-belt tooth profile — MXL, XL, L, H, XH, HTD 3M / 5M / 8M / 14M, Poly Chain GT 8MGT / 14MGT. Flanged or unflanged. Bored for taper bushing or supplied pilot-bore for final machining. Dimensioned to ISO 5296 / DIN 7721.
Technical Specifications
- Type
- Timing belt pulley (synchronous sprocket)
- Designation
- SKF PHP21-8M-20RSB
- HS code
- 8483.50
- Pitch
- 8 mm
- Belt width
- 20 mm
- Pitch diameter
- 53.47 mm
- Outside diameter
- 52.1 mm
- Bore min
- 12 mm
- Bore max
- 27 mm
- Width over grooves
- 38 mm
- Hub diameter
- 40 mm
- Category
- Timing belt pulleys
- Pulley type
- 1F
- Section
- 8M
- Mounting arrangement
- Rough stock bore
- Material
- Steel
- Number of teeth
- 21
- Product net weight
- 0.463 kg
- eClass code
- 23-17-02-08
- UNSPSC code
- 24101613
Standards & Compliance
- Standard
- SKF designation convention (see description for governing ISO / DIN)
- Material
- As declared by SKF designation suffix
- Temperature Range
- Per SKF product data
- HS Code
- 8483.50
Cross References
- Martin Sprocket 21820
- Browning 21820
- Optibelt 21820
- Equivalent: 21820 (Martin Sprocket)
- Equivalent: 21820 (Browning)
- Equivalent: 21820 (Optibelt)
Compatibility & Fitment
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.
Product Documentation
More from SKF
SKF
SKF PHS06B-1TB30 Metric roller-chain sprocket (ISO / DIN 8187)
SKF
SKF PHS140-2C60 ANSI roller-chain sprocket (ISO / DIN 8188)
SKF
SKF XGE20KTTB Insert bearing (YAR / YET / YSA / YEL)
SKF
SKF ER223 Bearing housing accessory
SKF
SKF GEH35ESL-2LS Radial spherical plain bearing
SKF
SKF HW-60X68X6-J2G Hydraulic rod wiper seal
SKF
SKF 7005CDGB/P4A Super-precision angular contact ball bearing
SKF
SKF N08 Bearing lock nut (keyway type)
Technical guides
- Timing Belt Pulley Finder — HTD 3M / 5M / 8M / 14M, T5 / T10 / AT5 / AT10, XL / L / H / XH by Teeth and Belt Width (SKF PHP)
- SKF 81xxx Cylindrical Roller Thrust Bearing — Dimensions, Load Ratings & Interchange (81102 to 81140)
- SKF Deep Groove Ball Bearing Reference — 6000 / 6200 / 6300 / 6400 Series (Dimensions, Load Ratings, Interchange to FAG NSK NTN Timken)
Catalogue entry last verified: 2026-08-13. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy PHP21-8M-20RSB?
- PHP21-8M-20RSB can be ordered from cballast.com as a SKF catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this SKF product?
- The manufacturer part number is PHP21-8M-20RSB.
- What is the HS code for PHP21-8M-20RSB?
- The customs tariff (HS) code for PHP21-8M-20RSB is 8483.50.
- Who manufactures PHP21-8M-20RSB?
- PHP21-8M-20RSB is a SKF product in the Bearings & Power Transmission range.
- Is a datasheet available for PHP21-8M-20RSB?
- Yes — the PHP21-8M-20RSB datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for PHP21-8M-20RSB?
- The minimum order quantity is 1.
- Is PHP21-8M-20RSB available?
- Yes — PHP21-8M-20RSB is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).