Hibernate annotation sem @id

org.hibernate.AnnotationException: No identifier specified for entity: br.com.visaoti.estacaotim.model.cadastro.seguranca.UsuarioAcessoBean

@Entity
@Table(name="usuario")
@SequenceGenerator(name = "seqUsuario", sequenceName = "seq_usuario")
public class UsuarioBean {
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO, generator = "seqUsuario")
	@Column(name="id")
	private Integer id;
	
	@Column(name="usr_login")
	private String login;
	
	@Column(name="usr_senha")
	private String senha;
	
	@Column(name="usr_ativo")
	private Boolean ativo;
	
        @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
        @JoinColumn(name="usr_codigo")
	public Set<UsuarioAcessoBean> acessos;

        //gets e sets
}

@Entity
@Table(name="usuarioacesso")
public class UsuarioAcessoBean {
	@ManyToOne
	@JoinColumn(name="usr_codigo", referencedColumnName="id")
	private UsuarioBean usuario = new UsuarioBean();
	
	@Column(name="usa_acesso")
	private String acesso;

        //gets e sets
}