MK4477 Morse 20GCT worm gearmotor with 40:1 ratio, right-hand output, and 56C NEMA frame. This GCT redesign
KKM Solutions is an independent parts distributor, not an authorized Morse dealer — how we source.
Morse MK4477 - Quill Input Solid Output Shaft Double Worm Gear - Width: 12.25 mm; Length: 12.25 ft; Height: 11.25 mm.
Overview
Part number MK4477 from Morse, listed in Gearboxes & Speed Reducers. Specifications on file: Assembly GCT-LR; Center Distance (in) 2 2; Center Distance Range 1" thru 3.25; Frame Size 56C. KKM Solutions quotes this part with pricing and availability confirmed per order.
Morse MK4477 is a Quill Input Solid Output Shaft Double Worm Gear catalog item from Morse. The manufacturer's published data for this part number specifies Width: 12.25 mm and Length: 12.25 ft.
Key manufacturer data on file for this item includes Height: 11.25 mm; Gear Ratio: 40:1; Output: Solid Shaft; Housing material: Cast Iron; Frame Size: 56C; Gear Type: Worm; Product type: Right Angle; Service Factor: 1; Input Style: C-Face Quill; Center Distance (in): 2 2; Center Distance Range: 1" thru 3.25; Input Bore (C Face): 0.625. See the Specifications tab on this page for the full technical table.
Specifications
| Assembly | GCT-LR |
|---|---|
| Center Distance (in) | 2 2 |
| Center Distance Range | 1" thru 3.25 |
| Frame Size | 56C |
| Gear Ratio | 40:1 |
| Gear Type | Worm |
| Height | 11.25 mm |
| Hole dia | 0.41 |
| Housing material | Cast Iron |
| Input Bore (C Face) | 0.625 |
| Input HP @ 1750 RPM | 0.65 |
| Input Keyway (C Face) | 3/16 X 3/32 |
| Input RPM | 1750 |
| Input Style | C-Face Quill |
| Length | 12.25 ft |
| No. of Gear Reductions | Single |
| Output | Solid Shaft |
| Output Diameter (in) | 1 |
| Output Key | 1/4 X 1.44 |
| Output RPM | 43.7 |
| Output Shaft Assembly Code | LR |
| Output Shaft Direction | Double |
| Output Torque Rating (in-lb) | 672 |
| Overhung Load Rating (Output Shaft(lb)) | 702 |
| Product Line | Morse Power Gear - Worm Gear Reducers |
| Product type | Right Angle |
| Ratio Range | 40:1 |
| Reducer | Worm - Right Angle |
| Service Factor | 1 |
| Shaft Seal Material | Viton |
| Width | 12.25 mm |
Product details
| Manufacturer | Morse |
|---|---|
| Manufacturer part number | MK4477 |
| Product category | Gearboxes & Speed Reducers |
| Published specifications | 31 attributes listed |
| Related part numbers | 13 other part numbers in this family |
Request a quote for this part
Email orderdesk@kkmsolutions.com or call (825) 454-5367 for pricing and availability.
Frequently Asked Questions
How do I get pricing for MK4477?
This part is quoted on request, so no price is listed for it here. Send the quote form on this page with your quantity, or email orderdesk@kkmsolutions.com, and our order desk will reply with pricing and availability within 1 business day.
Who manufactures the MK4477?
MK4477 is made by Morse and is listed in our Gearboxes & Speed Reducers category. KKM Solutions is an independent distributor, not an authorized Morse dealer: we source the exact Morse part number MK4477, and the quote confirms condition and lead time before you order.
Is the MK4477 new and genuine?
Parts we supply are new and genuine unless the quote expressly states otherwise. Where a part is new-old-stock, from excess inventory, refurbished or open-box, the quote says so before you approve it.
What warranty comes with the MK4477, and can I return it?
Parts we supply are warranted against manufacturing defects for 1 year from the date of delivery; where the manufacturer's own warranty is longer, the manufacturer's warranty applies. The warranty covers repair, replacement, or credit of the defective part and does not cover normal wear items, misapplication, improper installation, or consequential damages. Contact us within 30 days of delivery before returning anything — all returns need a return authorization from the order desk.
What is the lifecycle status of MK4477?
No published lifecycle status is on file for MK4477. Morse lists whether a catalog number is current, superseded or end-of-life on its own product page, and our order desk confirms the status with the manufacturer at quote time, before you commit. Send the part number through the quote form on this page.
What are the key specifications of MK4477?
Key specifications include Assembly: GCT-LR; Center Distance (in): 2 2; Center Distance Range: 1" thru 3.25; Frame Size: 56C. The full specification table on this page lists every published attribute for this part.
What is the bore size of MK4477?
Per the published specification for MK4477: Input Bore (C Face): 0.625. Confirm against the full specification table on this page, or ask our order desk to verify it with the manufacturer at quote time.
What material is MK4477 made of?
Per the published specification for MK4477: Housing material: Cast Iron. Confirm against the full specification table on this page, or ask our order desk to verify it with the manufacturer at quote time.
How quickly can MK4477 ship?
Lead time for MK4477 is quoted per order and confirmed on your quote, which our order desk sends within 1 business day. For a line-down emergency, call the 24/7 order desk at (825) 454-5367.
Variants & Related Part Numbers
Other Morse part numbers in this family:
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