128V2120N V-Belt Sheave, 12 Grooves, 8V Section, 21.2 in OD, N Bushing


Price:
$ 3,996.74

Description

Representative image shown. Actual product appearance varies by size, bore, and configuration. Refer to the specifications table for exact dimensions of this part number.

128V2120N V-Belt Sheave, 12 Grooves, 8V Section, 21.2 in OD, N Bushing

The 128V2120N is a 12-groove 8V section narrow wedge V-belt sheave with a 21.2 in outside diameter, fully machined from cast iron and statically balanced. It mounts with an industry-standard N QD® style bushing, sold separately, sized to your shaft. It runs 8V narrow wedge V-belts.

Specifications

Specification Value
Part Number 128V2120N
Belt Section 8V
Grooves 12
Outside Diameter 21.2 in
Pitch Diameter 21 in
Face Width 13.875 in
Bushing N series, QD® style (not included)
Material Cast Iron, fully machined, statically balanced
Weight 4 lb
Country of Origin China

Applications

  • Multi-belt narrow wedge drives on fans, blowers, and pumps
  • HVAC air handlers and cooling tower drives
  • Compressors and industrial process equipment
  • Replacing worn sheaves on existing drives without changing belts or bushings

Cross Reference

The 128V2120N interchanges with these equivalent part numbers, per published manufacturer interchange data:

Manufacturer Equivalent Part Number
Dodge® D12-8V212
Martin 12 8V 2120 N
Gates® QD12/8V21.20
TB Woods® 8V21212
Regal Rexnord (Browning®) 128V2120N
Carlisle 12-8V-2120-N
Masterdrive 12/8V2120N
Maurey 128V21.2-N
Jason Industrial 12/8V2120N
Optibelt QD 8V2120/12 N

Always verify dimensions and bore size before substituting part numbers across manufacturers.

Buying in bulk? Save on volume.

Multi-unit and OEM quantities qualify for volume discounts. Call or email for a quantity quote.

Frequently Asked Questions

What belts run on the 128V2120N?

8V narrow wedge V-belts. These sections are standardized, so any manufacturer's belts of the correct section and length will run in the grooves.

Does the 128V2120N replace the Dodge D12-8V212 sheave?

Yes. Published interchange data crosses the 128V2120N directly to the Dodge D12-8V212, as well as Martin 12 8V 2120 N, Gates QD12/8V21.20, TB Woods 8V21212. Verify groove count, diameter, and bore or bushing before ordering.

What bushing does the 128V2120N use?

A N series QD style bushing, sold separately. N is an industry-standard bushing size, so any manufacturer's standard N bushing fits. Order the bushing bore that matches your shaft diameter.

Does the 128V2120N ship from Houston?

Yes. Stock items ship same day from our Houston, Texas warehouse. Call (888) 203-2358 to confirm availability.

Need a quote on 128V2120N?

Houston warehouse, same-day shipping on stock items.

Call (888) 203-2358

QD® is a registered trademark of TB Woods/Regal Rexnord. All third-party part numbers and trademarks referenced, including Dodge®, Gates®, Martin, TB Woods®, Browning®, and others shown in the cross reference table, are the property of their respective owners. References are for compatibility identification only and do not imply affiliation or endorsement.

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