FREE delivery on orders over €150
Product Specifications:
| Item | Gear |
| Bore Dia. | 5/8" |
| Diametral Pitch | 20" |
| Face Width | 3/8" |
| Hub Dia. | 1 14/25" |
| Keyway Size | 1/8" x 1/16" |
| Kwy/setscrew/other | With Double Keyway Only |
| Material | Cast Iron |
| No. Of Teeth | 78 |
| Output Dia. | 4" |
| Pitch Dia. | 3.9" |
| Pressure Angle | 14.5° |
| Product Datasheet | boston-gear-g101.pdf |
| Product Series | GA Series |
| Type | Plain |
Shipping Info:
| Ship weight (kg) | 0.37 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Documentation:
Product Variants
| Product | Model | Diametral Pitch | Pitch Dia. | Hub Dia. | Type | Pressure Angle | Bore Dia. | Face Width | Material | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
GA51B | 20" | 2.55" | 1.38" | Plain | 14.5° | 5/8" | 3/8" | Cast Iron | €156.27 | |
![]() |
GA52B | 20 | 2.6" | 1.38" | - | 14.5° | 5/8" | 3/8" | Cast Iron | €161.10 | |
![]() |
GA53B | 20" | 2.65" | 1.38" | Plain | 14.5° | 5/8" | 3/8" | Cast Iron | €161.10 | |
![]() |
GA54B | 20" | 2.7" | 1.38" | Plain | 14.5° | 5/8" | 3/8" | Cast Iron | €164.12 | |
![]() |
GA55B | 20" | 2 3/4" | 1.38" | Plain | 14.5° | 5/8" | 3/8" | Cast Iron | €161.27 | |
![]() |
GA56B | 20" | 2 4/5" | 1.38" | Plain | 14.5° | 5/8" | 3/8" | Cast Iron | €161.27 | |
![]() |
GA57B | 20" | 2.85" | 1.38" | Plain | 14.5° | 5/8" | 3/8" | Cast Iron | €170.16 |
Explore Products
- NORLAKE 164447 NOR-LAKE SCIENTIFIC 164447
- HAMILTON S-WH-6V Workhorse Swivel Caster, 6 X 2 Inch Size, 3/4 Inch Straight Roller Bearing
- GATES 46882285
- CHICAGO-LATROBE 44188 Jobber Bit R High Speed Steel
- ASSOCIATED SPRING RAYMOND ASH020125 Compression Spring, 39.2 N/Mm Stiffness Rate, 264 lbf Load Capacity, Chrome Silicone
- SCHNEIDER ELECTRIC LC1K0610L7 Miniature Contactor Iec 208vac 3p 6a
- FEDERAL SIGNAL 191XL-024R Hazardous Location Warning Light, Red, LED, 24 VAC/DC, 70.8 Candela, Fresnel
- WALTER TOOLS M2131.031-T28-02-15 6836971 Indexable Square End Mill, 1 1/4 Inch Max. Cutting Dia, Screw On, T28 Connection Size
Explore More
- ER TAPE
- KEYSHAFT
- WALDMANN
- US NETTING
- PEAKWORKS
- Fall Rescue Accessories
- Electronic Torque Wrenches
- Medical Cabinets
- Elevator Sump Pump with Oil Sensor
- Hydronic Unit Heater Accessories
- DICKSON 3 Inch Charts
- LOUISVILLE FE3200 Series Fiberglass Extension Ladders
- MUELLER INDUSTRIES 105MAT-N Silent Check Valves
- GLOBE SCIENTIFIC Label Rolls, Cryo, Direct Thermal, 51 x 19 mm Size
- GLOBE SCIENTIFIC Label Sheet, Cryo, 13 mm Dots
- ADVANCE TABCO Storage Cabinet
- USA SEALING Tubings
- CALBRITE Drain Plugs, Stainless Steel
- WHEATON Interchangeable Volumetric Modules
- TRICO Grease Cups
Contact us
Contact your account manager right away to get personal advice.
We're available Monday through Friday, from 07:30 until 17:00.
BOSTON GEAR GA78B Change Gear, 20 Diametral Pitch, 14 1/2 Deg. Pressure Angle, 78 Teeth, Cast Iron
€197.62 /unit







