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Product Information

The R Series Metric Bearing Lock Nuts are made of 42CrMo steel with high strength and good wear resistance. This metric bearing lock nut features a radial locking structure and a copper triple-screw design, which can clamp the lead screw accurately, improve anti-loosening stability and avoid damage to the screw surface. It meets the axial positioning and locking requirements of ball screws and spindles in precision transmission equipment.

The circumference of the R-type lock nut has four evenly distributed slots. Therefore, it can be easily installed with a hook spanner.

Product name	R-type radial locknuts
Material	42CrMo
Thread precision	IOS4H
Series	R-type
Minimum order	50 sets
Hardness	28°-32°
Vertical accuracy	0.005MM
Features	Durable, corrosion-resistant, easy to install, interchangeable.
Packing	1. Plastic bag with box or wooden case. 2. According to customer's requirement.
Transportation	By sea/air/courier service.

Specification Parameters

Thread	D	h		d	n-g	t	n-m		Max. Nm
R M8x0.75P	16	8		13	3-3	1.6	2-M4		3.5
R M10x0.75P	18	8		15	3-3	1.6	2-M4		3.5
R M10x1.0P	18	8		15	3-3	1.6	2-M4		3.5
R M12x1.0P	20	8		17	3-3	1.6	2-M4		3.5
R M12x1.25P	20	8		17	3-3	1.6	2-M4		3.5
R M14x1.5P	25	8		21	3-3	2	2-M4		3.5
R M15x1.0P	25	8		21.5	3-3	1.8	2-M4		3.5
R M16x1.5P	28	10		24	3-4	2	2-M5		4.5
R M17x1.0P	28	10		24	3-4	2	2-M5		4.5
R M18x1.5P	30	10		26	3-4	2	2-M5		4.5
R M20x1.0P	32	10		28	3-4	2	3-M5		4.5
R M20x1.5P	32	10		28	3-4	2	3-M5		4.5
R M22x1.5P	35	10		31	3-4	2	3-M5		4.5
R M24x1.5P	38	12		34	3-5	2	3-M6		8
R M25x1.5P	38	12		34	3-5	2	3-M6		8
R M27x1.5P	42	12		38	3-5	2	3-M6		8
R M30x1.0P	45	12		41	3-5	2	3-M6		8
R M30x1.5P	45	12		41	3-5	2	3-M6		8
R M33x1.5P	52	12		48	3-5	2	3-M6		8
R M35x1.5P	52	12		48	3-5	2	3-M6		8
R M36x1.5P	55	14		50	3-6	2.5	3-M6		8
R M38x1.5P	56	14		51	3-6	2.5	3-M6		8
R M39x1.5P	58	14		53	3-6	2.5	3-M6		8
R M40x1.5P	58	14		53	3-6	2.5	3-M6		8
R M42x1.5P	62	14		57	3-6	2.5	3-M6		8
R M45x1.5P	65	14		60	3-6	2.5	3-M6		8
R M48x1.5P	68	14		63	3-6	2.5	3-M6		8
R M50x1.5P	70	14		65	3-6	2.5	3-M8		18
R M52x1.5P	73	16		67	3-7	3	3-M8		18
R M55x2.0P	75	16		69	3-7	3	3-M8		18
R M56x2.0P	77	16		71	3-7	3	3-M8		18
R M60x2.0P	80	16		74	3-7	3	3-M8		18
R M64x2.0P	85	16		79	3-7	3	3-M8		18
R M65x2.0P	85	16		79	3-7	3	3-M8		18
R M68x2.0P	92	18		85	3-8	3.5	3-M8		18
R M70x2.0P	92	18		85	3-8	3.5	3-M8		18
R M72x2.0P	95	18		88	3-8	3.5	3-M8		18
R M75x2.0P	98	18	91		3-8	3.5	3-M8	18
R M76x2.0P	100	18	93		3-8	3.5	3-M8	18
R M80x2.0P	105	18	98		6-8	3.5	3-M8	18
R M85x2.0P	110	18	103		6-8	3.5	3-M8	18
R M90x2.0P	120	20	112		6-10	4	3-M8	18
R M95x2.0P	125	20	117		6-10	4	3-M8	18
R M100x2.0P	130	20	122		6-10	4	3-M8	18
R M105x2.0P	140	22	130		6-12	5	3-M8	18
R M110x2.0P	145	22	135		6-12	5	3-M8	18
R M115x2.0P	150	22	140		6-12	5	3-M8	18
R M120x2.0P	155	24	145		6-12	5	3-M8	18
R M125x2.0P	160	24	150		6-12	5	3-M8	18
R M130x2.0P	165	24	155		6-12	5	3-M8	18
R M135x2.0P	175	26	163		6-14	6	3-M10	35
R M140x2.0P	180	26	168		6-14	6	3-M10	35
R M145x2.0P	190	26	178		6-14	6	3-M10	35
R M150x2.0P	195	26	183		6-14	6	3-M10	35
R M155x3.0P	200	28	186		6-16	7	3-M10	35
R M160x3.0P	210	28	196		6-16	7	3-M10	35
R M165x3.0P	210	28	196		6-16	7	3-M10	35
R M170x3.0P	220	28	206		6-16	7	3-M10	35
R M180x3.0P	230	30	214		6-18	8	3-M12	60
R M190x3.0P	240	30	224		6-18	8	3-M12	60
R M200x3.0P	250	32	234		6-18	8	3-M12	60
R M210x4.0P	270	34	245		6-18	8	3-M12	85
R M220x3.0P	270	34	245		6-18	8	3-M12	85
R M220x4.0P	270	34	254		6-18	8	3-M12	85
R M230x3.0P	280	34	264		6-18	8	3-M12	85
R M240x3.0P	290	34	265		6-18	8	3-M12	85
R M240x4.0P	290	34	274		6-18	8	3-M12	85
R M245x3.0P	295	34	279		6-18	8	3-M12	85
R M260x3.0P	310	36	285		6-18	8	3-M12	85
R M260x4.0P	310	36	294		6-18	8	3-M12	85
R M275x4.0P	325	36	309		6-18	8	3-M12	85
R M280x4.0P	330	36	314		6-18	8	3-M12	85
R M300x4.0P	350	36	334		6-18	8	3-M12	85
R M440x4.0P	520	46	500		6-20	10	6-M20	85
R M460x4.0P	540	46	520		6-20	10	6-M20	85

Product Display

Features of Metric Bearing Lock Nuts

Material and Strength: Constructed from 42CrMo alloy steel, combining high strength with wear resistance to withstand prolonged loads in precision transmission applications.

Core Locking Mechanism: Features a radial three-point locking system integrated with a copper set screw for precise positioning. This enhances anti-loosening stability while preventing direct contact damage to the lead screw surface.

Spatial Adaptability: The relatively slim overall structure allows flexible adaptation to installations with limited thickness, occupying minimal space within the transmission system.

Usage Considerations: During radial locking, as the copper set screw is perpendicular to the external thread, excessive torque may reduce axial load capacity of the nut. Locking torque must be strictly controlled.

Production inspection equipment

Specialising in production Quality assured

Face runout inspection

Inspection of end-face runout in lock nuts ensures assembly precision by preventing uneven contact surfaces, avoids transmission coaxiality deviations, and mitigates false locking and loosening failures caused by insufficient contact area. It further reduces wear on the nut and mating components from eccentric operation, thereby extending service life and diminishing vibration and noise induced by eccentricity, making it suitable for precision applications.

Tooth tip clearance inspection

Metric Bearing Lock Nuts undergo threaded fastener inspection to ensure precise engagement between the nut and mating components. This guarantees stable axial load-bearing capacity and anti-loosening performance after tightening, whilst minimising transmission system vibration and component wear caused by thread defects. Consequently, the service life of both the lock nut and the entire transmission structure is extended.

Hardness testing

Hardness testing verifies whether the locking nut meets specified hardness requirements (preventing deformation, stripping, or brittle fracture due to insufficient hardness), ensuring wear resistance to minimise wear, validating heat treatment effectiveness, and guaranteeing appropriate hardness matching with mating components (preventing unilateral excessive wear), thereby reducing equipment failure risks.

production equipment

We possess a comprehensive suite of specialised production equipment for lock nuts, encompassing bar cutting and straightening machinery, cold heading presses (hot heading presses), tapping machines (thread rolling machines, thread grinding machines), quenching and tempering furnaces (nitriding furnaces), galvanising, phosphating and sandblasting/polishing equipment, alongside cleaning machines, automated inspection systems and stud press-fitting machines. This ensures all-round precision and quality assurance throughout production.

Scenario Application

Wide range of use of bearings

Factory direct sales, please feel free to purchase

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Semiconductor manufacturing

Industrial automation

Medical equipment

CNC machine tools

Material transportation

Vehicle manufacturing

Company Profile

Lishui Jiesheng Transmission Co., Ltd. was established in 2020, occupying a site area exceeding 4,000 square meters. The company specializes in the R&D, production, and global sales of high-precision linear transmission systems. Centered around ball screws, linear guides, and linear modules, our product portfolio extends to customized system integration solutions for precision bearings, drive components, industrial automation, smart equipment, and new energy sectors. We are committed to providing you with efficient and reliable transmission technology support.

Our address

No.99 Dayuan Street, Liandu District, Lishui City, Zhejiang Province

Phone Number

+8613985937646

E-mail

huang2546448580@gmail.com