NL77.7 Heavy-Duty Forklift Mast Bearing

Shock-Resistant Outer Profile: Reinforced thick outer ring withstands continuous contact stress and heavy drop impacts.
Smooth Mast Travel: Micro-ground outer surface ensures smooth, bind-free vertical travel inside mast channels.
Dust & Moisture Defense: Heavy-duty rubber seals protect internal raceways from abrasive warehouse dust and moisture.
Factory Pre-Lubricated: Pre-packed with extreme-pressure grease for long maintenance-free service intervals.

Technical Data

Technical Parameter	Metric Value
Inner Bore Diameter (d)	35.00 mm
Outer Diameter (D)	77.70 mm
Total Width (B)	22.50 mm
Precision Standard	Industrial P0 / P6

Product Introduction

The NL77.7 is a specialized forklift mast guide bearing engineered to perform in intense material handling environments. Sized at 35 x 77.7 x 22.5 mm, this roller bearing features a thick-walled outer ring specifically designed to roll directly within the steel guide channels of a forklift mast. Produced within our advanced industrial bearing facility, the NL77.7 undergoes induction surface hardening to resist wear and severe shock loads during heavy lifting. Our rigorous quality control ensures that each bearing provides smooth, low-friction mast elevation, preventing mast chatter and ensuring operational safety across busy warehouse environments.

Product Specifications

Specification	Details
Item Type	Forklift Mast Roller Bearing
Model Number	NL77.7
Bearing Design	Thick-Walled Outer Ring Track Roller
Material	High-Purity GCr15 Steel
Sealing	Heavy-Duty Rubber Seals (2RS)

Applications

Forklift mast guide channels and carriage rollers.
Electric pallet stackers and reach trucks.
Vertical logistics hoists and automated storage systems.

Equivalent Models

NL 77.7
NL77.7-2RS

Cross Reference

Forklift OEM Part: NL77.7

FAQ

Q: What is the main application for the NL77.7 bearing?
A: It is primarily used as a guide roller in forklift mast assemblies to guide the carriage and inner mast sections smoothly under load.
Q: Does the outer ring profile have a flat or crowned surface?
A: Standard supply features a precision cylindrical outer surface; custom crowned profiles are available upon request.

OEM & Custom Service

We provide material handling equipment manufacturers and aftermarket suppliers with custom laser marking, specialized greasing options, and flexible bulk box packaging.

Packing & Delivery

Individually oil-coated, wrapped in VCI protective bags, and packed in heavy master export cartons securely palletized for international delivery.