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" |
| Key Way 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 | Pitch Dia. | No. Of Teeth | Hub Dia. | Diametral Pitch | Type | Kwy/setscrew/other | Length Through Bore | Max. Torque | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
GA51B | 2.55" | 51 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €156.27 | |
![]() |
GA52B | 2.6" | 52 | 1.38" | 20 | - | With Double Kwy Only | 1" | 34.1 lbs.-in. @ 1800 RPM | €161.10 | |
![]() |
GA53B | 2.65" | 53 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €161.10 | |
![]() |
GA54B | 2.7" | 54 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €164.12 | |
![]() |
GA55B | 2 3/4" | 55 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €161.27 | |
![]() |
GA56B | 2 4/5" | 56 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €161.27 | |
![]() |
GA57B | 2.85" | 57 | 1.38" | 20" | Plain | With Double Keyway Only | - | - | €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 Die Spring, Heavy Duty, Oil Tempered Chrome Silicone, 125 mm Overall Lg, Green Paint, 39.2 N/mm Spring Rate
- 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
- ADVANCE PRODUCTS & SYSTEMS
- KEYSHAFT
- LOCOLOC
- ATLANTIC BLOWERS
- LUMINAIRE LED
- Reflective Tape and Stickers
- O-Ring Accessories
- Aluminum Tread Plate
- Belt Drive Hooded Axial Downblast Exhaust Ventilators
- Vibratory Feeders
- DESTACO 207 Series Vertical Hold Down Clamps
- STARRETT Semi Flexible Steel Rules, Inch Graduations
- OIL SAFE Stretch Spout Lids
- DESTACO 381-M Series Pull Action Latch Clamps
- ANVIL AS661 Series Strut Brackets, Slot Down
- B & P MANUFACTURING Punched Aluminium Curb Ramps
- KERN AND SOHN BIC Series Floor Scales
- STAFFORD MFG Solution Series, Staff Lok Hinge Type Collars
- INGERSOLL-RAND V-Belts
- SIOUX CHIEF FinishLine Above-Grade Floor Drains, No-Hub Connection
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







