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Lock Bolt & Collar

YIZGEAR specializes in producing high precision, high quality gears in a wide range of sizes and volumes. Our spur gears can be manufactured to standard or custom specifications using precision gear grinding and gear cutting methods.

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Lock Bolt & Collar Products

Lock Bolt & Collar Description

Lock bolts and collars are mechanical fasteners used in various applications to secure components together. Here’s a brief overview of each:

Lock Bolts

Definition

Lock bolts are a type of fastener that provides a secure, tamper-resistant connection. They often consist of a bolt, a collar, and a locking mechanism.

Applications

Commonly used in construction, automotive, and aerospace industries where high strength and vibration resistance are required.

Advantages

High strength and reliability.
Quick installation with specialized tools.
Reduced risk of loosening under load or vibration.

Collars

Definition

Collars are circular devices that can be used to secure or position components along a shaft or rod. They can come in various designs, such as set screw collars or clamp collars.

Applications

Used in machinery, automotive, and robotics to hold parts in place, prevent axial movement, or act as stops.

Advantages

Easy to install and adjust.
Versatile for different applications.
Helps maintain alignment and prevent wear.

Capabilities Brochures

Manufacturing Processing of Lock Bolts and Collars

Material Selection

Raw Materials: High-strength steel or other alloys are commonly used due to their durability and load-bearing capacity.

Coatings: Corrosion-resistant coatings may be applied depending on the intended application.

Forging or Machining

Forging: The raw material is heated and shaped into the basic form of the bolt, which enhances its strength.

Machining: Precision machining is performed to create the threads and define the dimensions of the bolt and collar.

Heat Treatment

Hardening: The bolts may undergo heat treatment processes like quenching and tempering to increase hardness and strength.

Annealing: Sometimes used to relieve stresses and improve machinability.

Surface Finishing

Cleaning: The bolts are cleaned to remove any debris or oil.

Coating: Protective coatings, such as zinc plating or other finishes, are applied to prevent corrosion.

Assembly of Lock Mechanism

Collar Attachment: The collar is attached to the bolt, ensuring the design allows for secure locking.

Locking Mechanism: Depending on the design, the locking mechanism may be integrated during this stage.

Quality Control

Inspection: Each batch undergoes rigorous testing for dimensional accuracy, strength, and surface quality.

Testing: Mechanical tests may include tensile testing, hardness testing, and fatigue testing to ensure reliability.

Packaging and Shipping

Packaging: Finished lock bolts are packaged to prevent damage during transport.

Distribution: They are shipped to distributors or directly to customers for use in various applications.

Common Steel Code
Grades Comparison

CHINA/GB	ISO	ГΟСТ	ASTM	JIS	DIN
45	C45E4	45	1045	S45C	CK45
20MnTiB
ML08Al			1008

Most used Materials for Lock bolts and Collars

Carbon Steel
Excellent strength and hardness.
Commonly used in general applications.
Alloy Steel
Enhanced strength and toughness.
Suitable for high-stress applications.
Stainless Steel
Corrosion-resistant.
Ideal for marine and chemical environments.
Common grades: 304, 316.

Common Heat Treatment Process

Heat treatment is a crucial process in the production of lock bolts and collars, enhancing their mechanical properties to meet specific application requirements. Here’s an overview of the heat treatment processes commonly applied:

01

Hardening

Purpose

Increases hardness and strength by transforming the microstructure of the steel into martensite.

Process

The bolts and collars are heated to a high temperature (typically above the critical temperature) and then rapidly cooled (quenched) using oil or water.

02

Tempering

Purpose

Reduces brittleness introduced during hardening, improving toughness while retaining much of the hardness.

Process

After hardening, the components are reheated to a lower temperature (typically between 150°C to 650°C) for a specific duration, then cooled.

03

Normalizing

Purpose

Produces a uniform microstructure, enhancing strength and toughness while improving machinability.

Process

Similar to annealing, but the components are air-cooled after heating.

04

Annealing

Purpose

Relieves internal stresses, improves machinability, and refines the microstructure for better ductility.

Process

The components are heated to a specific temperature and then allowed to cool slowly in a furnace.

Diameter of Lock Bolts and Collars

Nominal Diameter	Actual Diameter		Nominal Riveting Thickness	Actual Riveting Thickness		Huck Model	Avdel Model
Nominal Diameter	Min	Max	Nominal Riveting Thickness	Min	Max	Huck Model	Avdel Model
5 (3/16″)	4.85	4.95	3	1.6	4.8	C6LB-R6-2G	02621-70602
			5	3.2	6.4	C6LB-R6-3G	02621-70603
			6	4.8	7.9	C6LB-R6-4G	02621-70604
			8	6.4	9.5	C6LB-R6-5G	02621-70605
			10	7.9	11.1	C6LB-R6-6G	02621-70606
			11	9.5	12.7	C6LB-R6-7G	02621-70607
			13	11.1	14.3	C6LB-R6-8G	02621-70608
			14	12.7	15.9	C6LB-R6-9G	02621-70609
			16	14.3	17.5	C6LB-R6-10G	02621-70610
			17	15.9	19.1	C6LB-R6-11G	02621-70611
			19	17.5	20.7	C6LB-R6-12G	02621-70612
			21	19.1	22.2	C6LB-R6-13G	02621-70613
			22	20.7	23.8	C6LB-R6-14G	02621-70614
			24	22.2	25.4	C6LB-R6-15G	02621-70615
			25	23.8	27	C6LB-R6-16G	02621-70616
			27	25.4	28.6	C6LB-R6-17G	02621-70617
			28	27	30.2	C6LB-R6-18G	02621-70618
			30	28.6	31.8	C6LB-R6-19G	02621-70619
			32	30.2	33.4	C6LB-R6-20G	02621-70620
6 (1/4”)	6.45	6.58	3	1.6	4.8	C6LB-R8-2G	02621-70802
			5	3.2	6.4	C6LB-R8-3G	02621-70803
			6	4.8	7.9	C6LB-R8-4G	02621-70804
			8	6.4	9.5	C6LB-R8-5G	02621-70805
			10	7.9	11.1	C6LB-R8-6G	02621-70806
			11	9.5	12.7	C6LB-R8-7G	02621-70807
			13	11.1	14.3	C6LB-R8-8G	02621-70808
			14	12.7	15.9	C6LB-R8-9G	02621-70809
			16	14.3	17.5	C6LB-R8-10G	02621-70810
			17	15.9	19.1	C6LB-R8-11G	02621-70811
			19	17.5	20.7	C6LB-R8-12G	02621-70812
			21	19.1	22.2	C6LB-R8-13G	02621-70813
			22	20.7	23.8	C6LB-R8-14G	02621-70814
			24	22.2	25.4	C6LB-R8-15G	02621-70815
			25	23.8	27	C6LB-R8-16G	02621-70816
			27	25.4	28.6	C6LB-R8-17G	02621-70817
			28	27	30.2	C6LB-R8-18G	02621-70818
			30	28.6	31.8	C6LB-R8-19G	02621-70819
			32	30.2	33.4	C6LB-R8-20G	02621-70820
8 (5/16”)	8.05	8.18	6	3.2	9.5	C6LB-R10-4G	02621-71004
			10	6.4	12.7	C6LB-R10-6G	02621-71006
			13	9.5	15.9	C6LB-R10-8G	02621-71008
			16	12.7	19.1	8.05~8.18	02621-71010
			19	15.9	22.2	C6LB-R10-12G	02621-71012
			22	19.1	25.4	C6LB-R10-14G	02621-71014
			25	22.2	28.6	C6LB-R10-16G	02621-71016
			28	25.4	31.8	C6LB-R10-18G	02621-71018
			32	28.6	34.9	C6LB-R10-20G	02621-71020
10 (3/8”)	9.65	9.78	6	3.2	9.5	C6LB-R12-4G	02621-71204
			10	6.4	12.7	C6LB-R12-6G	02621-71206
			13	9.5	15.9	C6LB-R12-8G	02621-71208
			16	12.7	19.1	C6LB-R12-10G	02621-71210
			19	15.9	22.2	C6LB-R12-12G	02621-71212
			22	19.1	25.4	C6LB-R12-14G	02621-71214
			25	22.2	28.6	C6LB-R12-16G	02621-71216
			28	25.4	31.8	C6LB-R12-18G	02621-71218
			32	28.6	34.9	C6LB-R12-20G	02621-71220
12 (1/2”)	12.5	13.1	6	6.35	12.7	C50LR-BR16-4	02861-01604
			12	12.7	19.1	C50LR-BR16-8	02861-01608
			18	19.1	25.4	C50LR-BR16-12	02861-01612
			24	25.4	31.8	C50LR-BR16-16	02861-01616
			31	31.8	38.1	C50LR-BR16-20	02861-01620
			37	38.1	44.5	C50LR-BR16-24	02861-01624
			44	44.5	50.8	C50LR-BR16-28	02861-01628
			50	50.8	57.2	C50LR-BR16-32	02861-01632
			57	57.2	63.5	C50LR-BR16-36	02861-01636
			63	63.5	69.9	C50LR-BR16-40	02861-01640
			70	69.8	76.2	C50LR-BR16-44	02861-01644
			77	76.2	82.6	C50LR-BR16-48	02861-01648
			83	82.6	88.9	C50LR-BR16-52	02861-01652
			89	88.9	95.3	C50LR-BR16-56	02861-01656
			95	95.3	101.6	C50LR-BR16-60	02861-01660
16 (5/8”)	15.7	16.3	6	6.35	12.7	C50LR-BR20-4	02861-02004
			12	12.7	19.1	C50LR-BR20-8	02861-02008
			18	19.1	25.4	C50LR-BR20-12	02861-02012
			24	25.4	31.8	C50LR-BR20-16	02861-02016
			31	31.8	38.1	C50LR-BR20-20	02861-02020
			37	38.1	44.5	C50LR-BR20-24	02861-02024
			44	44.5	50.8	C50LR-BR20-28	02861-02028
			50	50.8	57.2	C50LR-BR20-32	02861-02032
			57	57.2	63.5	C50LR-BR20-36	02861-02036
			63	63.5	69.9	C50LR-BR20-40	02861-02040
			70	69.8	76.2	C50LR-BR20-44	02861-02044
			77	76.2	82.6	C50LR-BR20-48	02861-02048
			83	82.6	88.9	C50LR-BR20-52	02861-02052
			89	88.9	95.3	C50LR-BR20-56	02861-02056
			95	95.3	101.6	C50LR-BR20-60	02861-02060
20 (3/4”)	18.8	19.5	6	6.35	12.7	C50LR-BR24-4	02861-02404
			12	12.7	19.1	C50LR-BR24-8	02861-02408
			18	19.1	25.4	C50LR-BR24-12	02861-02412
			24	25.4	31.8	C50LR-BR24-16	02861-02416
			31	31.8	38.1	C50LR-BR24-20	02861-02420
			37	38.1	44.5	C50LR-BR24-24	02861-02424
			44	44.5	50.8	C50LR-BR24-28	02861-02428
			50	50.8	57.2	C50LR-BR24-32	02861-02432
			57	57.2	63.5	C50LR-BR24-36	02861-02436
			63	63.5	69.9	C50LR-BR24-40	02861-02440
			70	69.8	76.2	C50LR-BR24-44	02861-02444
			77	76.2	82.6	C50LR-BR24-48	02861-02448
			83	82.6	88.9	C50LR-BR24-52	02861-02452
			89	88.9	95.3	C50LR-BR24-56	02861-02456
			95	95.3	101.6	C50LR-BR24-60	02861-02460
22 (7/8”)	22.0	22.7	12	12.7	19.1	C50LR-BR28-8	02861-02808
			18	19.1	25.4	C50LR-BR28-12	02861-02812
			24	25.4	31.8	C50LR-BR28-16	02861-02816
			31	31.8	38.1	C50LR-BR28-20	02861-02820
			37	38.1	44.5	C50LR-BR28-24	02861-02824
			44	44.5	50.8	C50LR-BR28-28	02861-02828
			50	50.8	57.2	C50LR-BR28-32	02861-02832
			57	57.2	63.5	C50LR-BR28-36	02861-02836
			63	63.5	69.9	C50LR-BR28-40	02861-02840
			70	69.8	76.2	C50LR-BR28-44	02861-02844
			77	76.2	82.6	C50LR-BR28-48	02861-02848
			83	82.6	88.9	C50LR-BR28-52	02861-02852
			89	88.9	95.3	C50LR-BR28-56	02861-02856
			95	95.3	101.6	C50LR-BR28-60	02861-02860
25 (1”)	25.1	26	12	12.7	19.1	C50LR-BR32-8	02861-03208
			18	19.1	25.4	C50LR-BR32-12	02861-03212
			24	25.4	31.8	C50LR-BR32-16	02861-03216
			31	31.8	38.1	C50LR-BR32-20	02861-03220
			37	38.1	44.5	C50LR-BR32-24	02861-03224
			44	44.5	50.8	C50LR-BR32-28	02861-03228
			50	50.8	57.2	C50LR-BR32-32	02861-03232
			57	57.2	63.5	C50LR-BR32-36	02861-03236
			63	63.5	69.9	C50LR-BR32-40	02861-03240
			70	69.8	76.2	C50LR-BR32-44	02861-03244
			77	76.2	82.6	C50LR-BR32-48	02861-03248
			83	82.6	88.9	C50LR-BR32-52	02861-03252
			89	88.9	95.3	C50LR-BR32-56	02861-03256
			95	95.3	101.6	C50LR-BR32-60	02861-03260

Collar Type	Nominal Diameter	Huck Model	Avdel Model
LMTP	5	2LC-R6G	02662-70600
	6	2LC-R8G	02662-70800
	8	2LC-R10G	02662-71000
	10	2LC-R12G	02662-71200
	12	LC-2R16G	02662-01600
	16	LC-2R20G	02662-02000
	20	LC-2R24G	02662-02400
	22	LC-2R28G	02662-02800
	25	LC-2R32G	02662-03200
LMTF	5	3LC-R6G	02615-70600
	6	3LC-R8G	02615-70800
	8	3LC-R10G	02615-71000
	10	3LC-R12G	02615-71200
	12	3LC-R16G	02615-01600
	16	3LC-R20G	02615-02000
	20	3LC-R24G	02615-02400
	22	3LC-R28G	02615-02800
	25	3LC-R32G	02615-03200
LMTJ	5	8LC-R6G	02682-70600
	6	8LC-R8G	02682-70800
	8	8LC-R10G	02682-71000
	10	8LC-R12G	02682-71200
	12	8LC-R16G	–
	16	8LC-R20G	–
	20	8LC-R24G	–
	22	8LC-R28G	–
	25	8LC-R32G	–

Lock Bolt & Collar

Products

OEM Customization Process

Demand Communication

Customers communicate with our sales team and put forward the customization requirements, including the type, size, material and precision requirements of gears.

Rich Product Types

According to the customer’s demand, our design team carries out gear design and draws detailed design drawings.

Production Processing

According to the design drawings and customer requirements, our production team adopts advanced production equipment and technology for production and processing.

Quality Inspection

The completed gears are subject to strict quality inspection, including the inspection of dimensional accuracy, surface quality, hardness and other parameters.